Wednesday, June 29, 2011

Friend or Foe?

Cold cases. If you thought decades-old ones were hard, try scrounging up evidence to shed light on a centuries-old one!
What we're doing today is evaluating the suspects behind the motivation for the construction of the defensive structures. Heckenberger devotes a decent portion of one of his interpretive chapters to discussing this issue of "Who," but ultimately asserts that this is the wrong question (137)--that instead of focusing on the question "What caused it?" we should be looking at the scale and nature of the warfare. And I agree that these latter two details are important to consider when trying to reconstruct a prehistoric people's lifestyle; however, I also believe that understanding the drive behind the warfare would be enlightening. What were the social dynamics like back then? What made the groups tick, you know? Plus, I feel that if someone is going to assert that some strategy is a defensive maneuver, one would have to also determine from whom this group needs protection. Otherwise, if no threat is established, "defense" seems like a pretty silly reason to do something, doesn't it?

But speaking of social dynamics reminds me of another area of concern. Heckenberger has spent an extensive period of time conducting fieldwork with the contemporary Kuikuru tribe, and as such has had a remarkable opportunity to develop an understanding of the group's social tendencies as well as to utilize the group members' historical accounts to reconstruct past social climates. This has led him to group the Kuikuru as part of a long-standing peaceful culture, and the lack of the Kuikuru's record of hostile feuds fits well with what he characterizes as the Xinguano lifestyle, which is governed by an inclination to accommodate and incorporate peacefully any outsiders. This welcoming process then triggers the "Xinguanification" of the newcomers, who eventually abandon their previous habits in favor of the Xinguano ones, spreading the tolerance. Indeed, he furthers, the Upper Xingu (UX) region can be thought of as a safe-haven, a “refuge” (147). However, while this harmonious image might hold true for the part of history that is encompassed by the contemporary Kuikuru recollection, remember that this is really just a sliver of the UX history! How reliable is this source for prehistoric information? If the Kuikuru can't explain how the ditches were built (aside from their legend), would it really be fair to expect them to be able to provide details as to why they were constructed?

Thus, as we conduct this investigation, if nothing else we must keep in mind that the current status quo (or even that recorded in the more recent Kuikuru memory) does not necessarily provide an accurate representation of the prehistoric social relations. With that said, let us begin!

I'm going to preface this investigation by saying that Heckenberger himself has yet to uncover any sort of concrete evidence that can point to a definite culprit. Ideally one would come across something like remnants of weapons fashioned in the unique style of a neighboring tribe, but unearthed within the boundaries of one the Arawak settlements (though this could suggest trade). But alas, no such objects have been found, be it that they are still waiting discovery or that no such battle residual had been left behind. Or perhaps the groups could have been kind enough to leave behind a written declaration of war. But alas, no form of written communication is known to have existed. Even oral history is less than helpful--much of the contemporary Kuikuru knowledge only spans back several centuries, and the only conflict that stands out are the attacks received at the hands of the Tupian-Gê tribes. The way we'll go about evaluating potential candidates is by taking a look at the major "suspicious" parties currently inhabiting the (UX).

This Tupian-Gê conflict that we mentioned the contemporary Kuikuru recall may seem like a strong piece of evidence implicating the Tupian-Gê tribes as the aggressors. However, we must keep in mind that in the grand scheme of the UX occupation, (stretching back to around 900 a.d., remember?) this is a relatively recent hostility. Who knows what relations were like a millennium ago? I mean, take a look at the relations among countries today: In some cases, it hasn't even taken a century for countries who were once at war with each other to develop alliances or friendships. Yet, of course, there are other countries who have been battling each other bitterly for centuries. That is why, while the Tupian-Gê tensions may exist only in recent memories, we will not discount them as potentially having even deeper roots. So we have our first suspect:
Suspect 1: Tupian-Gê tribes

Next up, we have the Carib tribes. These are the Kuikuru group's ancestors!
Suspect 2: Carib tribes

Even though the Europeans no longer have as overbearing a physical presence in South America as they once did, the results of their "interactions" (to put it politely) with the indigenous peoples had such a profound and devastating cultural impact that it's almost as if they never left.
Suspect 3: Portuguese explorers

They lurk in the shadows. They study their targets' behaviors to pinpoint the moment of least resistance. They strike without mercy. They are...WILD INDIANS! While the Tupian-Gê conflict is the only major source of tension that stands out in the collective Kuikuru memory, they did cite persisting (though sporadic), plaguing skirmishes launched by the wild indians that roamed the UX. Were the trenches a remedy to which the ancient groups found it necessary to turn for relief from these sieges?
Suspect 4: Wild Indians (ngikogo)

And finally, because no family is perfect, we must consider the fact that the early settlements did not always interact as harmoniously with each other as recent Kuikuru memory might suggest.
Suspect 5: Themselves?

Now that we've identified the potential culprits, let's evaluate the viability of each! I'm going to start with those who have the least evidence going for them, and can therefore be relatively securely eliminated.

We'll start with #2.
Suspect 2: Carib tribes
This is the group of people who originated east of the Culuene River.



(Remember Heckenberger's map on page 70. I've traced the Culuene in blue. The purple-shaded area to the right (i.e. to the east) are the areas of archaeologically known Carib settlements. They adopted a unique architecture style characterized by circular houses called the Eastern Complex making it relatively easy to pick out Carib settlements.)






But we run into some problems when we try to line up the timeline that we put together regarding the ditch construction and that explained by Heckenberger on page 71. Here he indicates that the first known Carib settlements date back to around 1250 a.d. at the earliest, and their migration to the west side of the Culuene occurred around 1750 a.d. Then we look at the date range from Heckenberger's analysis of the ditch constructions at X6: Nokugu-- 950 a.d. - 1210 a.d.

Hm. One could argue in favor of the later years of the date range and hypothesize that perhaps the Arawaks were the true inspiration for the Boy Scout "Be prepared" motto, and that at X6: Nokugu they chose to dig deep trenches just in case some invasive tribe decided to make a move down the road. But 8 centuries down the road is a little much, don't you think? Another smoking gun is uncovered when Heckenberger explains: "earthwork constructions and maintenance had apparently ceased by at least the mid-1600s" due to break-outs of disease, and consequent population (163, emphasis mine).

Of course, a band of adventurous Carib delinquents could very well have crossed the Culuene R sporadically to wreak havoc before the official migration in the late 1700s. However, logic argues against engaging in such a labor-intensive project in response to what would likely have been infrequent assaults.


Plus, let's consider the geographic spread of the sites exhibiting peripheral ditches (PDs).
For one, we have X17: Hatsikugi. Now, if the Caribs were indeed the ditch-inspiring threat, it would make perfect sense that this settlement that is located so close to the known Carib occupations would merit some sort of defensive structure.
However, on the opposite end of the spectrum we have X11: Kuhikugu. It seems very unlikely that this site, almost 30 km from the nearest known Carib settlement, would have undertaken such extensive construction in response to the distant Caribs, especially if the threat was not consistent.

OK, so since there was quite a few details covered, let's recap the evidence that we have pertaining to suspect #2.


Review: Suspect 2: Carib tribes
  • Mismatched timing: The ditches in one site (X6: Nokugu) were constructed between 950 and 1210 a.d. The Caribs lived east of the Culuene R between 1250 and 1750 a.d.
  • Discouraging distance: X11: Kuhikugu features PDs, but is located almost 30 kilometers from the closest known Carib settlement.
Based on these points, common sense suggests that it could not have been the Caribs that inspired the Arawaks to build such deep defensive trenches. (the 8 centuries between the ditch construction and the Carib migration is a pretty decent alibi, don't you think?)
Suspect 2: Carib tribes. CLEARED.

Up next we have the European terrors.
Suspect 3: Portuguese explorers
Our process for evaluating the explorers can follow a similar line as that used to help clear the Caribs: timing. It is indisputable that before 1492, no European explorers had even been to the Americas. It would have been impossible for them to have acted as a threat when the ditches were being constructed in 950 a.d. at X6: Nokugu. Indeed, the first recorded DIRECT contact between the indigenous Xinguano wasn't until Pires de Campos Filho in 1740. So right away, we can say:
Suspect 3: Portuguese explorers. CLEARED.

OK, next!Suspect 4: Wild Indians (ngikogo)
While some indigenous peoples of the UX gradually adopted a sedentary lifestyle and began building up communities, other groups remained more individualized and mobile. These wild indians (or, as they are locally called, ngikogo) roam the region, and according to the Kuikuru they are known to be belligerent. Additionally, this belligerence appears to have been habitual—as far back as the collective Kuikuru memory spans, the ngikogo have pestered the more settled tribes. In fact, Heckenberger cites ngikogo attacks (in addition to pressures from Portuguese explorers) as part of the catalyst driving the Carib migration in 1750 a.d. (154). Though we cannot know for sure whether the ngikogo plagued the groups inhabiting the UX when they first settled the area, perhaps these skirmishes are a continuation of a centuries-old tendency. However, there is no doubt that if there were ngikogo-led sieges, the attacks would be more blitzkrieg than operational. Though perhaps resulting in real damage, these sieges would be infrequent and of minimal threat to the overall security of the settlements. With that in mind, we must ask ourselves the same question we asked when we were evaluating whether the ditches were used to fend off the ravenous peccaries: Would the Arawaks really go to such lengths, constructing elaborate, labor-intensive defense structures to protect against such sporadic attacks? It is doubtful. And because these ditches did require so much effort, this makes the ngikogo unlikely suspects (though they are less out-of-the-question than the others discussed so far).
Suspect 4: Wild Indians (ngikogo) CLEARED(ish).


So, we've eliminated 3/5 of our suspects--the Caribs, the Portuguese explorers, and the Wild Indians. The situations surrounding the remaining two suspects--the Tupian-Gê tribes and the Arawak communities themselves--are a little more complex, so we'll devote Friday's post entirely to investigating those two!
Until then!

Monday, June 27, 2011

A Clarification

The last time we spoke, we were discussing the mysterious trenches surrounding at least four (possibly 5) of the ancient Upper Xingu (UX) settlements. We considered several hypotheses to explain the reason behind their construction, ranging from attempts to thwart ravenous peccaries to advances in irrigation. Finally, however, we settled on accepting that the trenches served as defensive structures, especially since the sites at which the ditches are present have yielded archaeological evidence (complex road structures, elaborate central plazas) to suggest that these occupations were major residential centers. Gotta protect the goods, right?
Then we looked at a picture of one of the trenches at X6: Nokugu.
This picture, actually:
I led you in marveling at its dimensions--3 ft. by 17 ft., as recorded by Heckenberger. And I'm still taken aback at how deep that is. It truly must have required a substantial amount of labor, and what a terrible fate awaited any ne'er-do-well that should happen across it. Such a defensive trench seems pretty efficient, and pretty tidy!
But then, a thought occurred to me.
The dimensions.
Yes, 17 ft., that's quite a depth, and if someone fell (or was pushed?!) into that, the result would not be pretty.
But 3 ft.? What good would having a 3 ft.-wide ring around an important settlement do? 

In my mind, I envisioned what a hostile attack on X6: Nokugu might have looked like from this perspective:
Enemy approaches!
Clearly very hostile.
"But what's this? A treacherously deep defensive ditch?
Does this mean I won't be able to attack the village on the other side?"
"...Nope."
(Running start)
"HAHAHAHAAA!"


"Ready or not, here I come!"






If the defensive ditch is only 3 ft. wide, I'm pretty sure that any enemy willing to go through the effort of attacking a populous village would have no trouble jumping over it.


So, understandably, I was a little confused--this doesn't exactly make for the strongest "defensive structure" argument. I needed some answers!


The first thing I did was reread the caption of the Heckenberger's trench photo, incredulously.

"Fig. 3.8 Excavation of trench one (1993; top) and trench 10 (2002), both bisecting ditch two at Nokugu. Note trench 10 was 5.2 meters deep from the base of the narrow funnel-shaped basal portion (about 1 meter wide), a possible seat for palisade trunks, to the top of the inside berm" (85).
And therein lay the problem. Well, problems. In my excitement at actually having a picture of the infamous trenches, I didn't read the caption very carefully. While these pictures are, in fact, structures found at X6: Nokugu, they're not the peripheral ditches that primarily concern us. So what the heck are they, then?
Let's take a look at the X6: Nokugu GPS plan, shall we? (p.82):

Now, I originally thought Heckenberger was referring to the middle arc. But actually, the pictures he provides are of two "trenches" that cross the arc at one of these 3 points:
 So, fail on my part. (I just assumed that people would take and share photographs of the most interesting discoveries. I guess not.) 

However, another difficulty arises in that, according to Heckenberger's caption, he unofficially makes a distinction between the terms "trench" and "ditch," whereby only "ditch" refers to the earthworks interpreted as defensive structures ("trench" apparently refers to another hole in the ground of debatable purpose). This is a risky move on his part that should not be made so subtly--much of the literature I have come across have used these two interchangeably, and many scholars, such as Dr. Carneiro, have preferred to use "trench" when speaking of the defensive structures. (And anyway, if I had to pick one, I would be inclined to select "trench" myself--I mean, as far as connotations go, "ditch" doesn't have a very strong one. It's like, "Oh, yeah, I tripped and fell in a ditch." Or, "Come on, Johnny, let's go dig a ditch." As opposed to "Oh, yeah, I fell in a TRENCH." Or, "Come on, let's go dig a TRENCH!" You don't exactly get the same mental image with both of those words, do you? For the sake of this blog, I will align myself with the others in the anthropology/archaeology community that use "ditch" and "trench" interchangeably. If I use one of these terms and I'm NOT referring to the defensive structures, I'll say so.
As far as I'm concerned, two very important lessons can be taken from this experience.

#1. Read captions carefully.
#2. Do not assume readers will interpret the connotations of technical terms in the same manner in which one has used them.

I'll definitely remember these, especially when it comes time to organize our research into a public paper.
Yet even after I identified my misunderstanding, I was still concerned--what WERE the dimensions of the other ditches, then? As far as I could tell, Heckenberger never really gave a definite account of the precise physical dimensions of the ditches (though I will admit, I am less inclined to trust my initial impressions now, after that caption fiasco! But I did revisit the site descriptions in search of measurements, but to no avail.)

Well, what were the trenches like? How in the world would I be able to get an answer that question? The mysterious trenches of the UX aren't exactly high up on the "Most Visited Destinations" list. Where in the world would I be able to find someone else who had seen these structures? Dr. Carneiro, of course! After all, he was one of the first anthropologists to study in the UX. So the next day I explained my confusion, and tenuously took him through my mental image of the jumping invader, very much afraid that the entire "defensive structure" theory would be unraveled at any moment. But Dr. Carneiro put my fears to rest:
Though he did not have extensive exposure to the X6: Nokugu peripheral ditches, he was very familiar with those at X11: Kuhikugu to the south. As Heckenberger describes X11: Kuhikugu, back in its day this was the largest residential site (79), so we can be sure that there were things worth protecting at this location.
For reference, here is the site plan:

Now, Dr. Carneiro himself has stood alongside the external trench (the one that I've faintly highlighted in yellow), and while he never conducted any formal measurements of the structures, he estimated that the ditch ran approximately 8-9 ft. deep, and spanned a width of about the same. That's roughly half the depth of Heckenberger's X6: Nokugu "trenches," but the width makes the X11: Kuhikugu ditches 100x more formidable.


"Defensive structures," it would appear, 
is still on the table as a probable explanation. 

Hooray!
Now that I've made that clarification, I promise we'll continue with our investigation!
Up next: Who posed such a threat to the Arawaks (remember, in the last post we discussed that the implications of Heckenberger's soil dating results put the settlement of X6: Nokugu, for one, at c. 900 a.d., meaning the Arawaks were the ones who erected these occupations) that they would undertake the construction of such defensive structures?

 (I also just want to point out that I went back and reread the above caption for the X11: Kuhikugu plan extra-closely after I realized my faux-pas with the X6: Nokugu situation, and Heckenberger himself uses the term "trench" to describe these same structures that he also refers to as "peripheral ditches" in other instances.)

Monday, June 13, 2011

Entrenched

In one of the earlier posts, I mentioned that the landscape of the Upper Xingu (UX) region features some sets of deep trenches. For their part, the Kuikuru attribute the trench construction to one of their gods, Fitsi-Fitsi. According to oral legend, Fitsi-fitsi was basically a man who one day decided to whittle his right leg into a sharp point--"his weapon." When he realized that his family in the village had locked their doors and refused to open them when they found out what he had done, Fitsi-fitsi gathered "his people" (the myth is vague about to whom this refers) and set out for the forest. It is said that whenever he came across a place that would be suitable for his people to reside, he used his pointed leg to make deep ditches. These semicircular trenches, he explained to the people, would serve as shelter from cold winds. He would leave a group of his people there to form a village, and continue on until he found another spot, marking it in the same fashion. This process continued until he reached what is today known as Kuhikugu, the southernmost known Kuikuru settlement, where he settled and apparently still lives today.


Now, I'm hardly one to dismiss legends as having no explanatory merit, but I can't help feeling like there's something more to the ditches than being created by a pointy-legged village-maker. And many anthropologists agree.
One alternate explanation that was proposed linked the trenches to the region's peccary problem--that because the crafty peccaries were consistently finding ways to bypass the fences that the Kuikuru had constructed around their manioc gardens, the Kuikuru resorted to building ditches to trap the unwary peccaries.

 
Prized, tasty manioc



 






          +


Aww, look, a hungry peccary. How cute!
=  PROBLEM!               




That brings us to...
Hypothesis 1: The trenches were constructed as traps for peccaries

However, there are a few wrinkles in this theory. For one, building these trenches would have been no small business--some have been recorded to be as deep as 17 feet, and 3 feet across! That would have been a substantial undertaking--would the peccary protection be worth all of that effort? 17 feet is quite deep, and kind of overkill. 
Hypothesis 1: The trenches were constructed as traps for peccaries
The end result does not merit such a time-/energy-consuming effort. REJECTED.
I think we can put this hypothesis on the back-burner and investigate the region a little more to see what else we can come up with. 

Mike Heckenberger has done extensive excavation and mapping of these regions, which he shares with us in his book The Ecology of Power

This is the Kuikuru settlement region of the UX that we're looking at (page 70):


 The three numbers with the red squares around them (X6: Nokugu, X13: Heulugihïtï, X11: Kuhikugu) are the three sites at which Heckenberger conducted the most fieldwork. That dark black squiggle that runs from the northwest part of the image to the southeast is the Culuene River. Back in the day (we're talking way back, like,1200s a.d.) the Culuene was essentially the divide between two cultures, the Arawaks and the Caribs. These tribes both inhabited the Upper Xingu region, but settled on different sides of the Culuene (Arawaks on the west, and Caribs on the east) and developed their own cultures, which we'll talk more about later.
The Kuikuru are descendants of the Caribs, which is why there is a red circle around X14: Tehukugu--one of the oldest known Carib settlements in this region.
X41: Itsagahïtï also has a red circle around it because archaeologists can't definitively determine whether its ruins represent the Arawak culture (aka "Western Complex") or the Carib culture (aka "Eastern Complex"). Evidence is scarce, and thus inconclusive.


Now, for the interesting part.
 When analyzing the ditches, Heckenberger noticed that there seemed to be some correlations between the ditches and the water source of each settlement: in almost every instance where there were ditches, they were arranged so that they arced around the occupational part of the settlement, beginning and ending at the water source. This close association was pounced on by those who had suggested the ditches were intended to have an irrigation function.
Hypothesis 2: The ditches were constructed as part of an irrigation system.

But one (significant) detail didn't add up--the ends of the ditches that bordered the water source lay far beyond the high-tide mark of the bodies of water. The trenches were way too far away for them to ever be filled up! Now, perhaps the groups had engineered some sort of ancient water-getting system that channeled water into the ditches and we simply have no record of it. That would make this hypothesis possible--but not probable. Since we have no evidence (physical or part of oral history) of such a machine, we're going to need to put this hypothesis aside.


So we've discarded the "peccary trap" and the "irrigation system" hypotheses.
What are we left with?
Let's re-examine Heckenberger's map of the region (page 70):

This time, the sites that are circled are those that supposedly exhibit peripheral ditches (PDs)--the ditches that completely encircle the village occupation area, described by Heckenberger as "semi-lunar." (X13: Heulugihïtï, for instance, features 3 ditches, but they are tiny and do not circumscribe anything. Because the ditches of X13: Heulugihïtï deviate so drastically from the observed norm, it would not be accurate to assume that their purposes were the same, and thus our focus will be primarily on the large trenches that surround the villages).
This list of PD sites includes:
X6: Nokugu
X18: Akagahïtï
X11: Kuhikugu
X17: Hatsikugi
X40: Sekuhai [Heckenberger has not actually examined the PDs at this site; knowledge of their existence comes only from modern Kuikuru testimonies. Since their presence cannot be concretely confirmed by Heckenberger himself, we will not include this site in our analysis.]

What is interesting to note is that these sites featuring PDs are also those that, based on Heckenberger's excavations, happened to be the major residential centers of this region. Which means there would be a lot of people living there. Also, based on Heckenberger's discovery of specialized structures (i.e. buildings whose blueprints were upgraded) at X18: Akagahïtï plus remnants of complex road systems and sprawling central plazas that go above and beyond similar organization at the other sites, it can be inferred that some pretty important people lived at these sites enclosed by PDs. (Maybe even chiefs! Let's remember this for later when we evaluate evidence in favor of/against the presence of a chiefdom in this area.)
Usually where there are important people (or things), there are also certain developments of security.
17-foot deep trenches would make a pretty good defensive strategy, don't you think? Especially if the threat were a bit more menacing than hungry peccaries, like, say, hostile humans.

This leads us to...
Hypothesis 3: Trenches were constructed to protect villages from human attack.

Here's an example of such a formation, observed by Heckenberger at X18: Akagahïtï (page 94):

The dark, solid black lines represent the trenches.
The other vein-y lines that look like roads represent, well, roads. And the giant circle you see in the center represents a central plaza. Upon excavation, Heckenberger found the foundations of two circular settlements in the area indicated by my faintly drawn square (one of which is the specialized structure that I mentioned him citing earlier!).
The open area to the northeast is where the Ipatse Stream runs by the settlement. Though it is not depicted in this GPS plan that Heckenberger offers, the stream would run right by each of the end points of these ditches, effectively serving as the final (and natural) piece of the barrier. The plaza and the settlements, then, would be safely encircled by the trench-water combo.


 
Here's a copy of Heckenberger's map of X11: Kuhikugu (page 99):

This site actually had two ditches.
As you can see, there is a ditch that I've colored red which runs along the interior, as well as an external ditch. It is this external--or peripheral, as Heckenberger uses--ditch that runs essentially from bank to bank around X11: Kuhikugu.
This settlement, X11: Kuhikugu, is the same, old settlement that we discussed earlier when recounting the legend of Fitsi-fitsi. The southern end of the ditch is where, according to Kuikuru legend, Fitsi-fitsi still lives.

Finally, X6: Nokugu is the site that Heckenberger spent the most time analyzing, and thus will be the site that we'll consider most closely (since there is an abundance of data) (page 82):

Heckenberger has spent a lot of time conducting soil samples, and from these stratigraphic tests has been able to give 900 a.d. as an estimated year for the beginning of a settlement in Nokugu. Since there are no records of permanent Carib settlements west of the Culuene River until 1770 or so, it is likely that the Arawaks were the initiators of this occupation. As you can see, there are three concentric ditches here (weird!!!).

 We'll explore the implication of the trio later, but for now let's focus on the dates of each one. Normally I would have us start with the smallest ditch, ditch 3, the most interior one. However, Heckenberger was not able to get a clear reading on its age, and is in the process of re-dating it. So we move to ditch 2, the middle ditch! Radiocarbon dating puts the construction of ditch 2 somewhere in the range of 950 a.d. - 1210. Thus, not only were the Arawaks the initiators of the occupation of X6: Nokugu, it was the Arawaks who presumably built the ditches as well.
Finally, for the most peripheral and all-encompassing of the trenches, ditch 1. Here's a picture (page 85):



According to soil samples as well as dates collected from pottery shards found in the ditch, ditch 1 was constructed around 1290 a.d., +/- 70 years.
It measures about 17 feet deep, and a little over 3 feet wide. That's a pretty substantial undertaking!






 Pretty deep, huh? Once the majority of anthropologists had focused on considering warfare/defensive purposes to provide a motive for the construction of the ditches, the question "Defense from whom?" After all, if it happened that there was no one from whom the tribe would need to protect themselves, taking all that time and effort to build such a ditch would be pretty pointless, right? To fill in that hole in the argument, then, we need to assess the potential threats in the area.


I think we've analyzed enough evidence for one post, and we've established that the defensive purposes of the ditches espoused by Hypothesis 3 appear to be the most viable motive behind their construction.
Next we'll consider the potential suspects. Could the Arawaks have been guarding themselves from wild indian attacks? Were the Carib groups based to the east of the Culuene River the threat? Was it the Tupian-Gê tribes? Or could it have been inter-tribe hostility?
It's back to the books to find out!
Stay tuned!