The Prehistoric Rock-Art Site of the Côa Valley is an open-air Paleolithic archaeological site located in a region of northeastern Portugal, near the border with Spain.
In the early 1990s rock engravings were discovered in Vila Nova de Foz Côa during the course of the construction of a dam in the valley of the Côa River. They include thousands of engraved rock drawings of horses, bovines and other animals, human and abstract figures, dated from 22,000 to 10,000 years B.C. The sites were reviewed by archaeologists and other specialists of UNESCO and other agencies.
UNESCO website http://whc.unesco.org/en/list/866
Address 5150, Portugal
Coordinates 41°4'49.39" N -7°8'13.175" E