Dated 11,000 BP, it is characterized by a new cooling of the climate, recession of the forests and a last period of extending glaciations. From this period the archaeological site of Tequendama in Soacha shows lithic instruments (Tequendamenses tools) with a more smooth manufacture, many of them made with materials brought to this place from the Magdalena River valley, such as quartzite. At Tequendama, evidence for domestication of guinea pigs has been uncovered.