Henri Breuil, color illustrations of Altamira Cave paintings, 1906. In: Illustrated London News, 1912.

In 1879, Marcelino Sanz de Sautuolo discovered, on his property in Altamira, Spain, drawings on the ceiling of a cave. These were the first examples of palaeolithic cave paintings ever found. The cave contains remains of the daily activities of its inhabitants who lived there between 22,000 and 14,000 before the present.

More Blade and Bone, online exhibition Linda Hall Library.