Prehistoric Rock Art Sites in the Côa Valley and Siega Verde

Ice Age artists worked not only deep in caves but under the open sky — and nowhere is the proof richer than along the Côa in Portugal and at Siega Verde on Spain's Águeda. Horses, aurochs, ibex and deer were pecked and incised into riverside rock over thousands of years, with some 5,000 figures recorded in the Côa Valley alone. UNESCO inscribed the Portuguese site in 1998 and joined Siega Verde to the World Heritage listing in 2010, together the supreme open-air gallery of Paleolithic art in Iberia.