Cueva de los Casares

Cueva de los Casares is a cave in Riba de Saelices. Discovered in 1933, it contains a number of paleolithic cave paintings, and is most notable for a series of paintings depicting what some have argued is the earliest representation of human understanding of the reproductive process, featuring images of copulation, pregnancy, childbirth, and family life. Mammoths and other animals feature frequently in the illustrations. It was declared Bien de Interés Cultural in 1935.There are many representations of animals, anthropomorphs, and ideomorphs.

The cave and its paintings are little known to scholars outside Spain.

Source: Wikipedia