| Kariandusi Prehistoric Site | |
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  Located in Kenya | |
| Location | Kariandusi, Kenya |
| Nearest city | Nairobi, Kenya |
| Coordinates | 00°42′00″S36°30′00″E / 0.70000°S 36.50000°E |
| Governing body | National Museums of Kenya |
| History of Kenya |
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 Kenyaportal |
Kariandusi prehistoric site is an archaeological site in Kenya. Located on the southeastern edge of the Great Rift Valley and on Lake Elmenteita, Kariandusi is an African Early Stone Age site dating to approximately 1 million years ago. [1]
This site was discovered by Louis Leakey in a 1928 expedition in the exposed Kariandusi riverbed. [2] Leakey graduated St. John's College, Cambridge in 1926 with some of the best grades in his graduating class. Due to his success, St. John's awarded Leakey a research grant for his first East African Archaeological Expedition. [3] Using funds for his Expedition, Leakey was able to finance three separate trips to the site (in 1928, 1931, and 1946) and several trip to his other research destinations including Olduvai Gorge and Lake Victoria. After Leakey, J.A.J. Gowlett and R.G. Crompton co-led a fourth expedition in 1974, and this was the last major excavation endeavor at the Kariandusi prehistoric site. [4] However, there have been several research projects concerning the Kariandusi Prehistoric Site.
The Early Stone Age (ESA) in Africa extends from about 2.6 million years ago to 280,000 years ago. It is also synonymous with the Lower Paleolithic. This was the period when the most well-known human ancestors were evolving: Australopithecus afarensis , Paranthropus boisei , Homo habilis (the "Handy Man"), and Homo erectus . At the time that Kariandusi was in use, 1 million years ago, Homo erectus was in the eastern African Rift Valley.
Besides the evolution of humans, there was the metaphorical evolution of tools. The ESA was the beginning of modern tool use, and the time period has two Modes (a way of classifying tools without designating them to certain cultural or ethnic groups). Mode 1 is primarily Oldowan "choppers," tools made from pebbles in the Olduvai Gorge area by, mostly, Homo habilis. Mode 2 includes the Acheulean handaxes found mostly in the Turkana Basin of Kenya, which were made primarily by Homo erectus. Kariandusi, due to its location in eastern Africa and the age of the site, was likely occupied by Homo erectus who produced Mode 2 technologies. [5]
When this site was discovered and initially researched, the finds were sent to museums all around the world (as was common at the time). However, because the finds were not wholly cataloged, there is no comprehensive list of all finds from Kariandusi. To understand the scope of the assemblage, consider that Cambridge University alone has over 250 handaxes from Kariandusi. [6] Obsidian was the main material used in making the Acheulean handaxes, but lava-based materials like quartz-trachyte were also used. [7]
Several theories address the nature of the Kariandusi site, including its possible use as a "factory" site, and why wear on the edges of the handaxes there are not typical of those from surrounding sites.
The sheer number of handaxes found at Kariandusi prompted notions that it had been a factory for Acheulean handaxes[ citation needed ]. It was also once thought of as one of the oldest in situ Acheulean hand axe site in the world[ citation needed ]. When it was discovered, the researchers believed it had been untouched since the last stoneworker had left. However, recent climate research has revealed that nearby Lake Elmenteita once reached further inland, and has receded in the past one million years, with the collection at Kariandusi having accumulated due to the water rushing over the land and depositing the hand axes there. The denial of this site as a factory is supported by the lack of waste found at the site i.e. no flakes or debris left over from the creation of the handaxes, which would be associated with dedicated factory. [8]
At Kariandusi it is common to find handaxes with little to no edge wear. This also helps contribute to the idea that Kariandusi was once a factory site: if it was a factory site, these axes would be created on site and then passed out or shipped to different communities around Kariandusi. A study by evolutionary biologist Steven Mithen puts out the theory that there was no edge wear because the handaxes weren't used as axes, but as "sexual lures," ways the nearby males would attract females. The minimal edge wear, coupled with the immense number of handaxes contributes to this idea. However, Mithen proposal has received little to no support. [9]
Modern handedness is the topic of many psychological research articles, one suggesting that over 10% of the world's population is left handed. [6] A 1997 archaeological research project, led by Laura Phillipson, analyzed about 250 Kariandusi handaxes for signs of handedness. Phillipson's team focused on 54 handaxes that appeared to have been used the least, with the least amount of wear on the edges, and analyzed the hand-hold spots on each specimen. Based on how comfortable a handaxe was to hold in either the left or right, 6 of the samples were proved to be left-handed. [10] The full results of the research are as follows:
It was possible to assign a probable left handedness to 6 out of the 54 specimens examined, or 11%. Of the remainder, 45 were probably intended for right-handed use and 3, as mentioned above, were indeterminate.
- Laura Phillipson, Cambridge University
Because 11% of the selected handaxes appeared to be left-handed axes, the conclusion is that modern human handedness was already appearing in the Early to Middle Stone Age, almost 1 million years ago. [11]
The National Museums of Kenya is a state corporation that monitors national Kenyan museums and monuments, including Kariandusi. A museum was built at Kariandusi near the prehistoric site, with a stairway going down to where the handaxes were discovered. The Kariandusi Museum also addresses several other nearby historic sites as well. The NMK - Kariandusi website advertises the following: [1]
Homo habilis is an extinct species of archaic human from the Early Pleistocene of East and South Africa about 2.31 million years ago to 1.65 million years ago (mya). Upon species description in 1964, H. habilis was highly contested, with many researchers recommending it be synonymised with Australopithecus africanus, the only other early hominin known at the time, but H. habilis received more recognition as time went on and more relevant discoveries were made. By the 1980s, H. habilis was proposed to have been a human ancestor, directly evolving into Homo erectus which directly led to modern humans. This viewpoint is now debated. Several specimens with insecure species identification were assigned to H. habilis, leading to arguments for splitting, namely into "H. rudolfensis" and "H. gautengensis" of which only the former has received wide support.
Louis Seymour Bazett Leakey was a Kenyan-British palaeoanthropologist and archaeologist whose work was important in demonstrating that humans evolved in Africa, particularly through discoveries made at Olduvai Gorge with his wife, fellow palaeoanthropologist Mary Leakey. Having established a programme of palaeoanthropological inquiry in eastern Africa, he also motivated many future generations to continue this scholarly work. Several members of the Leakey family became prominent scholars themselves.
The Stone Age was a broad prehistoric period during which stone was widely used to make stone tools with an edge, a point, or a percussion surface. The period lasted for roughly 3.4 million years and ended between 4,000 BC and 2,000 BC, with the advent of metalworking. Though some simple metalworking of malleable metals, particularly the use of gold and copper for purposes of ornamentation, was known in the Stone Age, it is the melting and smelting of copper that marks the end of the Stone Age. In Western Asia, this occurred by about 3,000 BC, when bronze became widespread. The term Bronze Age is used to describe the period that followed the Stone Age, as well as to describe cultures that had developed techniques and technologies for working copper alloys into tools, supplanting stone in many uses.
A stone tool is, in the most general sense, any tool made either partially or entirely out of stone. Although stone tool-dependent societies and cultures still exist today, most stone tools are associated with prehistoric cultures that have become extinct. Archaeologists often study such prehistoric societies, and refer to the study of stone tools as lithic analysis. Ethnoarchaeology has been a valuable research field in order to further the understanding and cultural implications of stone tool use and manufacture.
Homo ergaster is an extinct species or subspecies of archaic humans who lived in Africa in the Early Pleistocene. Whether H. ergaster constitutes a species of its own or should be subsumed into H. erectus is an ongoing and unresolved dispute within palaeoanthropology. Proponents of synonymisation typically designate H. ergaster as "African Homo erectus" or "Homo erectus ergaster". The name Homo ergaster roughly translates to "working man", a reference to the more advanced tools used by the species in comparison to those of their ancestors. The fossil range of H. ergaster mainly covers the period of 1.7 to 1.4 million years ago, though a broader time range is possible. Though fossils are known from across East and Southern Africa, most H. ergaster fossils have been found along the shores of Lake Turkana in Kenya. There are later African fossils, some younger than 1 million years ago, that indicate long-term anatomical continuity, though it is unclear if they can be formally regarded as H. ergaster specimens. As a chronospecies, H. ergaster may have persisted to as late as 600,000 years ago, when new lineages of Homo arose in Africa.
The Olduvai Gorge or Oldupai Gorge in Tanzania is one of the most important paleoanthropological localities in the world; the many sites exposed by the gorge have proven invaluable in furthering understanding of early human evolution. A steep-sided ravine in the Great Rift Valley that stretches across East Africa, it is about 48 km (30 mi) long, and is located in the eastern Serengeti Plains within the Ngorongoro Conservation Area in the Olbalbal ward located in Ngorongoro District of Arusha Region, about 45 kilometres from Laetoli, another important archaeological locality of early human occupation. The British/Kenyan paleoanthropologist-archeologist team of Mary and Louis Leakey established excavation and research programs at Olduvai Gorge that achieved great advances in human knowledge and are world-renowned. The site is registered as one of the National Historic Sites of Tanzania.
A hand axe is a prehistoric stone tool with two faces that is the longest-used tool in human history. It is made from stone, usually flint or chert that has been "reduced" and shaped from a larger piece by knapping, or hitting against another stone. They are characteristic of the lower Acheulean and middle Palaeolithic (Mousterian) periods, roughly 1.6 million years ago to about 100,000 years ago, and used by Homo erectus and other early humans, but rarely by Homo sapiens.
Acheulean, from the French acheuléen after the type site of Saint-Acheul, is an archaeological industry of stone tool manufacture characterized by the distinctive oval and pear-shaped "hand axes" associated with Homo erectus and derived species such as Homo heidelbergensis.
The Oldowan was a widespread stone tool archaeological industry (style) in prehistory. These early tools were simple, usually made with one or a few flakes chipped off with another stone. Oldowan tools were used during the Lower Paleolithic period, 2.9 million years ago up until at least 1.7 million years ago (Ma), by ancient Hominins across much of Africa. This technological industry was followed by the more sophisticated Acheulean industry.
The Kalambo Falls on the Kalambo River is a 235-metre (772 ft) single-drop waterfall on the border of Zambia and Rukwa Region, Tanzania at the southeast end of Lake Tanganyika. The falls are some of the tallest uninterrupted falls in Africa. Downstream of the falls is the Kalambo Gorge, which has a width of about 1 km and a depth of up to 300 m, running for about 5 km before opening out into the Lake Tanganyika rift valley. The Kalambo waterfall is the tallest waterfall in both Tanzania and Zambia. The expedition which mapped the falls and the area around it was in 1928 and led by Enid Gordon-Gallien. Initially it was assumed that the height of falls exceeded 300 m, but measurements in the 1920s gave a more modest result, above 200 m. Later measurements, in 1956, gave a result of 221 m. After this several more measurements have been made, each with slightly different results. The width of the falls is 3.6–18 m.
The Lower Paleolithic is the earliest subdivision of the Paleolithic or Old Stone Age. It spans the time from around 3.3 million years ago when the first evidence for stone tool production and use by hominins appears in the current archaeological record, until around 300,000 years ago, spanning the Oldowan and Acheulean lithics industries.
Archaeologists define a chopper as a pebble tool with an irregular cutting edge formed through the removal of flakes from one side of a stone.
Koobi Fora refers primarily to a region around Koobi Fora Ridge, located on the eastern shore of Lake Turkana in the territory of the nomadic Gabbra people. According to the National Museums of Kenya, the name comes from the Gabbra language:
In the language of the Gabbra people who live near the site, the term Koobi Fora means a place of the commiphora and the source of myrrh...
Lantian Man, Homo erectus lantianensis) is a subspecies of Homo erectus known from an almost complete mandible from Chenchiawo (陈家窝) Village discovered in 1963, and a partial skull from Gongwangling (公王岭) Village discovered in 1964, situated in Lantian County on the Loess Plateau. The former dates to about 710–684 thousand years ago, and the latter 1.65–1.59 million years ago. This makes Lantian Man the second-oldest firmly dated H. erectus beyond Africa, and the oldest in East Asia. The fossils were first described by Woo Ju-Kan in 1964, who considered the subspecies an ancestor to Peking Man.
Homo erectus is an extinct species of archaic human from the Pleistocene, with its earliest occurrence about 2 million years ago. Its specimens are among the first recognizable members of the genus Homo.
Olorgesailie is a geological formation in East Africa, on the floor of the Eastern Rift Valley in southern Kenya, 67 kilometres (42 mi) southwest of Nairobi along the road to Lake Magadi. It contains a group of Lower Paleolithic archaeological sites. Olorgesailie is noted for the large number of Acheulean hand axes discovered there that are associated with animal butchering. According to the National Museums of Kenya, the finds are internationally significant for archaeology, palaeontology, and geology.
Ugwuele is an Igbo community in Uturu, Isuikwuato Local Government Area, Abia State in Nigeria which houses a Stone Age site that provides evidence that humans inhabited the region as far back as 250,000 years ago. It was the largest handaxe factory in Nigeria, and possibly in the world.
Prehistoric technology is technology that predates recorded history. History is the study of the past using written records. Anything prior to the first written accounts of history is prehistoric, including earlier technologies. About 2.5 million years before writing was developed, technology began with the earliest hominids who used stone tools, which they first used to hunt food, and later to cook.
The following outline is provided as an overview of and topical guide to prehistoric technology.
Beeches Pit is an archaeological site in Suffolk, England, dated to around 0.4 million years ago. It contains palaeoenvironmental remains, and is particularly notable because it provides evidence of the human use of fire, the earliest in Britain. In addition, knapping debris and Acheulean hand axes have been found. It is one of the richest sites in England for evidence of human activity during that period, and the hand axes are the "earliest post-Anglian handaxe-making horizon in Britain".
 Archaeological sites in Kenya | |
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| Sites | |