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Guide to Patagonia's Monsters & Mysterious beings

I have written a book on this intriguing subject which has just been published.
In this blog I will post excerpts and other interesting texts on this fascinating subject.

Austin Whittall


Showing posts with label Pedra Furada. Show all posts
Showing posts with label Pedra Furada. Show all posts

Sunday, June 7, 2026

Brazil, ancient sites and Homo erectus in America, a 1992 paper


An old article published in 1992, by Spanish archaeologist Gabriela Martin Avila, La antiguedad del hombre en el Nordeste de Brasil (The antiquity of Man in the northeast of Brazil, Rev. do Museu de Arqueologia e Etnologia, S. Paulo, 2:7-12, 1992), explores the possibilities, not only of pre-Clovis sites in America, but also even older dates.


Martin mentions that "...the most advanced theories even suggest the possibility that Homo erectus arrived in America 200,000 or 300,000 years ago." To support this statement, she cites Argentine archaeologist Juan Schobinger, and his 1988 essay "200.000 años del hombre en América: ¿Que pensar?" (200,000 years of man in America: What to think?). Schobinger, according to Martin analyzed several sites in North America, and suggested that there were "chances that Homo erectus had reached the American continent thousands of years before the Homo sapiens sapiens."


The sites are the following: Old Crow in the Canadian Yukon, excavated William Nathaniel Irving; Texas Street in San Diego (see my post on it), the Calico Site in California (I posted on it back in 2011), and Valsequillo (see my post), and Toca da Esperanca site in Brazil (more on this site below).


Pedra Furada Site


Gabriela Martin then mentions some more recent sites, equally controversial, dated to around 50 kya, like Piedra Furada in Brazil, and other more recent ones of pre-Clovis age, and concludes that:


"It is necessary to await for new evidence, always with an open mind to any new theory that may be confirmed. It is also valid to ask, "Why not?" If we know today that descendants of the Chou-Ku-Tien man, or those related to the Sinanthropus [here she refers to the H. erectus from China, the Peking man] adapted to extremely cold Siberian climates, nothing prevents them from crossing Beringia before the last interglacial period if they knew how to make fire. The case of the Australians who sailed great distances is also frequently cited when arguing for the possibility of reaching America via oceanic routes during the Pleistocene era.
An interesting theory, though still in the realm of conjecture, would be that if the
[erectus] ancestors of Homo sapiens managed to reach America, they may have been small groups that became extinct, giving rise to the long gap that preceded the arrival of other waves around 50,000 years ago. These new groups, dispersed across different regions of the continent, may also have become extinct, which would explain the long periods of unoccupied sites observed at some sites that we could call strategic, indicating gaps of 10,000 to 20,000 years. This would be the case of Boqueirão da Pedra Furada, in southeastern Piauí, to cite the most important archaeological site in northeastern Brazil, in terms of chronological sequence.
Based on the data known today, it cannot be denied that northeastern Brazil was populated by humans at least 50,000 years ago. These people, without specialized projectile points, used crude stone tools, wooden points, and traps to hunt mastodons, giant sloths, horses, llamas, and other smaller animals, including a large number of rodents and birds. Further evidence of their presence is only a matter of time.
"


An interesting combination that proposes not only an Homo erectus migration into America or even a transpacific voyage from Australia, but also that the erectus became extinct before modern humans reached America much more recently.


Toca da Esperanca Site


Another research paper from that period gives a thorough review, country by country of the alleged pre-Clovis sites in South America. (Lynch, T. F. (1990). El hombre de la edad glacial en suramérica: una perspectiva europea. Revista de Arquelogía Americana, 141-185). In the case of Brazil, it mentions the Toca da Esperanca site:


"...now that it has been reported in South America [about] an association of primitive quartzite tools with Pleistocene fauna, dated between 204,000 and 295,000 years ago (Beltráo and Danon 1987; de Lumley et al., 1988; Weber 1989). The Esperança Cave was first explored and appropriately named by Beltráo in 1982 and has been excavated since 1985. The preliminary results were presented at conferences in Rio de Janeiro, Turin, and Mainz in 1987 and quickly published in France, as well as in Brazil. The depth of the deposit is given as only 1.0 to 1.5 m [3 to 5 ft], but it yielded dates ranging from 2020 ± 130 BP. (radiocarbon at the highest Level 1) to 295,000 years (by the uranium-thorium method, at the lowest level)...
The Franco-Brazilian team identifies two pebble tools and a chopper from Level IV, as well as a hammer and several fáo and Danon (1987) state that at least one is specifically Clactonian in type. They also mention molds of human teeth (?), bone tools, hearth structures, and charcoal at all levels, but do not mention these in the subsequent French publication. More significantly, both reports specify that the quartz and quartzite artifacts are from rocks found only within 10 km of the cave.
The deposit is thin and the artifacts are simple, but at first glance, there seems to be no good reason not to accept this discovery of Middle Pleistocene man in America (Homo erectus?).
According to these researchers, "It is therefore not surprising that the Homo erectus who occupied the Chinese continent at least 700,000 years ago... and who domesticated fire 400,000 years ago (Chou-Kou-Tien), crossed the Bering Strait repeatedly" (de Lumley et al., 1988:245). However, it is necessary to mention that there is a serious dispute about whether Middle Pleistocene man (and specifically Peking Man) was in systematic possession of the use of fire, which is thought to have been present at Cueva Esperança, and whether it was necessarily the man who had to cross the Bering Strait (Binford and Ho 1985; Binford and Stone 1986; James 1989). Thus, the discovery at Esperanca should have implications for the archaeology of the Old World, as well as for that of the New World.
"


There seems to be some hesitation in the text: charcoal and hearths which were reported but then omitted in the French language paper, or the fact that we aren't sure if H. erectus mastered the art of fire making. But the dates 204 to 205 ky for the lowest levels, with "Clactonian" tools, which some belive were made by H. erectus while others support the notion that they were made by H. heidelbergensis. The age of this industry is 420 to 380 kya, and it predates modern humans.


Schobinger in his work also expresses his doubts about this site: "Let's admit it's difficult to accept an age of almost 300,000 years for materials found at a depth of only about 1.30 m [4.3 ft]. It's true that they are sealed by a carbonaceous-calcareous layer (and in that sense, it's in situ material), but we are told that this layer formed not much more than 20,000 years ago (Lumley et al., 1987: 929). What happened before then? Is the association of the very few quartzite stone fragments with the bones on which the U/To dating was performed reliable? Is this method entirely dependable?"


Patagonian Monsters - Cryptozoology, Myths & legends in Patagonia Copyright 2009-2026 by Austin Whittall © 

Tuesday, April 28, 2026

Monkeys and the pre-Clovis stone tools in Brazil


Although I am a strong supporter of an early peopling of America (over 20 and possibly 50 or even 100 kya), I must be fair and that is why this post will look into the intriguing possibility that monkeys, not humans, crafted the crude stone tools dated to around 40,000 years ago, found in Brazil.


The first to suggest this idea was Stuart Fiedel, in 2017, with a research paper titled Did Monkeys Make the Pre-Clovis Pebble Tools of Northeastern Brazil?, in it, he reports that the capuchin monkeys of South America use pebbles as tools to crack open nuts, they hammer them with these cobbles to open them. They also pound wood to find bugs. In the process, they leave behind remains that resemble man-made stone tools. They may have been doing so for the past 100,000 years!


monkey cracking nut with a stone
monkey using stone tool
Capuchin monkeys using stone tools to crack nuts. Source

The idea is interesting. The remains left behind by monkeys look like human stone tools. Furthermore, the paper suggests that monkeys taught humans how to use local resoures: "the possible influence of monkeys’ tool use on human behaviour. For example, cashew nuts are native to this area of Brazil, and it is possible that the first humans to arrive here learned about this unknown food through watching the monkeys and their primate cashew-processing industry..."


The matter was followed up by two Argentine researchers, Agustín and Federico Agnolín (see article) suggest that the stone tools attributed to pre-Clovis humans are in fact made by monkeys. They didn't find any differences or evolution between the tools that are 50,000 years old, and contemporary monkey-made tools: "Our study shows that the tools from Pedra Furada and other nearby sites in Brazil were nothing more than the product of capuchin monkeys breaking nuts and rocks some 50,000 years before the present,” says F. Agnolín, also a researcher at the ‘Argentine Museum of Natural Sciences “Bernardino Rivadavia”’ (MACN-CONICET), and the “Azara Foundation.”"


Besides using rock hammers to dig, and break open nuts, the capuchin monkeys also use them to pulverize other stones and lick the mineral-rich dust as natural mineral supplements. The resulting flaked stone fragments resemble human-made stone tools.


The authors argue that the ancient tools attributed to humans, found at the Piedra Furada site (see my post about this site), are far to simple to have been made by humans "they always consisted of fractured pebbles, anvils, hammers, and jagged-edged rock fragments, but other types of tools never appeared. All these characteristics are indistinguishable from the tools used today by capuchin monkeys".


But, what if... they are the work of a cobble or pebble type lithic industry, simliar to the Oldowan, one used by archaic hominins? Could Homo habilis or even Australopiths have reached America with primitive stone tool know-how?


Read the paper here: Agnolín, A. M., & Agnolín, F. L. (2022). Holocene capuchin-monkey stone tool deposits shed doubts on the human origin of archeological sites from the Pleistocene of Brazil. The Holocene, 09596836221131707. https://doi.org/10.1177/09596836221131707



Patagonian Monsters - Cryptozoology, Myths & legends in Patagonia Copyright 2009-2025by Austin Whittall © 

Thursday, November 11, 2021

24 kyr Stone Tools in Pedra Furada, Brazil


Earlier this year a paper by Eric Boëda ( Boëda E, Ramos M, Perez A, Hatté C, Lahaye C, Pino M, et al. (2021) 24.0 kyr cal BP stone artefact from Vale da Pedra Furada, Piauí, Brazil: Techno-functional analysis. PLoS ONE 16(3): e0247965. rRephttps://doi.org/10.1371/journal.pone.0247965) analyzed stone tools dated 24,000 years old, from Brazil. The interesting part is (see my previous post) that the authors acknowledge the conflict between orthodox scholars and those that support an early peopling of America.


They wrote: "The peopling of the Americas continues to be subject of intense debate, basically between two positions that often do not consider fully South American research: a Last Glacial Maximum (LGM sensu stricto, dated between 19–23 kyr BP) occupation (current consensus) and a pre-LGM occupation. In support of the latter, a growing body of evidence demonstrates a Late Pleistocene human presence (i.e. Paleoamerican) in South America well beyond 20 cal kyr BP"


The article then goes on to describe stone tools and one in particular (24 kya). What I found interesting is the authors' comment that the older layers have cobble type quarz tools (they look Oldowan to my layman eyes. See Fig. 5), and as you reach younger levels, the tools morph into bifacial tools (Fig. 7). Both are shown below:


Fig. 5 they look like Pebble tools (Oldowan)

Fig. 7, bifacial (Acheulean axes?)

Anyway, these findings show two things. One, evidence is mounting and it supports an earlier peopling of America and, two, that North American scientists wouldn't even see an ancient stone industry tool because they don't think there are any in the Americas. They will ignore it or consider it a geofact.


Patagonian Monsters - Cryptozoology, Myths & legends in Patagonia Copyright 2009-2021 by Austin Whittall © 
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