Portugal - Spain - Prehistoric Rock-Art Sites in the Côa Valley and Siega Verde

"The Prehistoric rock-art ensemble in the Côa Valley, Portugal, inscribed on the World Heritage List in 1998, is an exceptional concentration of rock carvings from the Upper Palaeolithic (22,000-10,000 B.C.) and is on a scale that makes it the most outstanding example of early human artistic activity in this form anywhere in the world. The archaeological zone of Siega Verde, in the Castilla y León region (Spain), completes the site. The 645 engravings were made on an impressive cliff, the result of erosion by the river. They are mostly figurative, representing animals, although some schematic and geometric figures have also been identified. The prehistoric rock-art sites of the Côa Valley and Siega Verde represent the most remarkable open-air ensemble of Palaeolithic art on the Iberian Peninsula." 

Source: UNESCO World Heritage