A team of archaeologists recently came across a major series of animal paintings, dating from up to c.14,500 years ago and including horses, bison, goats, and deer, in the Atxurra caves near Berriatua, Bizkaia. There are about 70 etchings in total dating from the Upper Paleolithic era that were previously unknown to modern researchers, most likely due to their remote location, approximately 1,000 feet deep, inside the cave system. The paitings may have contained black coal dust and were made using flint tools.
The Atxurra cave was first discovered in 1929 and was excavated between 1934 and 1935 by Jose Miguel de Barandiaran, still considered to be the greatest Basque ethnographer of all time. For some wonderful traditional folk tales as well as detailed accounts of many of Barandiaran’s excavations, see Selected Writings of José Miguel de Barandiarán: Basque Prehistory and Ethnography.