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A geofact (a portmanteau of "geology" and "artifact") is a naturally formed stone formation that is difficult to distinguish from a man-made artifact. Geofacts could be fluvially reworked and be misinterpreted as an artifact.[1]

Possible examples include several purported prominent ancient artifacts, such as the Venus of Berekhat Ram and the Venus of Tan-Tan. These are thought by many in the archaeological community to be geofacts. Two sites which show an abundance of what are likely geofacts are Calico Early Man Site and the Gulf of Cambay.


  1. ^ Demeter F, Patole‐Edoumba E, Duringer P, Bacon AM, Sytha P, Bano M, Laychour V, Cheangleng M and Sari V 2010. Reinterpretation of an archaeological pebble culture from the Middle Mekong River Valley, Cambodia. Geoarchaeology 25(1)