The Altiplano Cundiboyacense, and its southeastern flat portion theBogotá savanna, were populated by the first humans in the late Pleistocene, as evidenced by finds inPubenza (16,000 years BP), El Abra, Tibitó and others. Until roughly 30,000 years BP, the Bogotá savanna was covered by a large lake;Lake Humboldt. This glacial lake surrounded by snowy peaks was fed by the glaciers ofSumapaz in the south, based on analysis of debris flow deposits close toFusagasugá, yielding ages between 40,000 and 7000 years BP.[5] The approximately 4,500 square kilometres (1,700 sq mi) large lake contained an island, presently known as theSuba Hills (Cerros de Suba), inBogotá. Surrounding the lake, Pleistocene megafauna asGlyptodonts,giant sloths,mastodons and deer foraged. The lake retreated during the last 30,000 years, but remnants still existing today are theBogotá River and its tributaries,Lake Herrera and the manyWetlands of Bogotá. Thetimber line around Lake Humboldt, in older texts namedLake Bogotá, has been estimated to have been 1,000 metres (3,300 ft) lower than today.[6]
During the latest Pleistocene and early Holocene, the first humans arrived on theAndean high plateau at 2,650 metres (8,690 ft) above sea level. They settled in caves and rock shelters in various locations on the Altiplano and had ahunter-gatherer lifestyle. The main ingredient of the early diet existing untilcolonial times waswhite tailed deer (Odocoileus virginianus). Fishing in the many lakes that existed in those times was another source of food for the people.
When the first human settlers arrived at Tibitó,mastodons were still extant and served as food and bone tool source for the people
Radiocarbon dating of a deeper lacustrine clay in the sequence of Tibitó revealed the site was in a lake environment around 52,000 years BP.[7] Pleistocene lakes also existed in theUbaté-Chiquinquirá Valley to the northwest and in the valley ofSoatá, in the lower altitude northeasternmost part of theMuisca Confederation.[8] The paleoclimate changed over the course of the latest Pleistocene and the Upper Pleniglacial was relatively humid, eroding earlier lagunal clays. The latest stage of the Pleniglacial was characterised by a cold and dry climate. In the valleys, hunter-gatherers lived. The original topography was covered in theGuantivá interstadial andEl Abra stadial by humic sediments.[9]
At Tibitó remains of the extinctPleistocenemegafaunaCuvieronius,Haplomastodon andEquus amerhippus and extantwhite tailed deer andcrab-eating fox have been found set in a circle. The bones were burnt and unburnt and mixed with stone artifacts and limestone chunks. The most important finds ofCuvieronius come from the Eastern Cordillera, with main sites Tibitó andMosquera.[10] 156 unifacial stone artifacts, of which 41% knives,[11] pieces of carbon and bone tools have been found and analysed byGonzalo Correal Urrego.[12][13] Ninetynine percent of the finds were from local origin.[14] The bones, showing a relative higher abundance ofHaplomastodon thanCuvieronius and the extinct American horse,[11] have been carbon dated to be 11,740 ± 110 years old.[4] This was confirmed bypalynological analysis, that also indicated apáramo climate at the time.[3][15] This makes the site slightly younger than the oldest;El Abra, dated at 12,400 ± 160 yearsBP.[4]
In the vicinity of Tibitó,rock art has been discovered.[4]
Gnecco, Cristóbal; Aceituno, Javier (2004), "Poblamiento temprano y espacios antropogénicos en el norte de Suramérica - Early peopling and anthropogenic spaces in the northern South America",Complutum (in Spanish),15:151–164
Hoyos, Natalia; Monsalve, O.; Berger, G.W.; Antinao, J.L.; Giraldo, H.; Silva, C.; Ojeda, G.; Bayona, G.; Escobar, J.; Montes, C. (2015), "A climatic trigger for catastrophic Pleistocene–Holocene debris flows in the Eastern Andean Cordillera of Colombia",Journal of Quaternary Science,30 (3), John Wiley & Sons, Ltd.:258–270,Bibcode:2015JQS....30..258H,doi:10.1002/jqs.2779,hdl:10533/238798
Prado, José Luis; Alberdi, María Teresa; Sánchez, Begoña; Azanza, Beatríz (2003), "Diversity of the Pleistocene Gomphotheres (Gomphotheriidae, Proboscidea) from South America",Deinsea,9,Natural History Museum, Rotterdam:347–363
Scott, David A.; Meyers, Pieter (1994),Archaeometry of Pre-Columbian sites and artifacts, TheGetty Conservation Institute, pp. 1–437
Villarroel, Carlos; Concha, Ana Elena; Macía, Carlos (2001), "El Lago Pleistoceno de Soatá (Boyacá, Colombia): Consideraciones estratigráficas, paleontológicas y paleoecológicas",Geología Colombiana,26,Universidad Nacional de Colombia:79–93
Hammen, Thomas van der;Correal Urrego, Gonzalo; Klinken, Gert Jaap van (1990), "Isótopos estables y dieta del hombre prehistórico en la sabana de Bogotá - Stable isotopes and diet of the prehistoric man on the Bogotá savanna",Boletín de arqueología (in Spanish),2, Bogotá, Colombia:3–10
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