The Altamira Cave, with paintings from the Stone Age, is located 2 km from Santillana del Mar. In 1879, a marquis, alerted by his five-year-old daughter, discovered the fantastic rock paintings.
The ceiling is populated by 21 bison, a hind and a wild horse. The Stone Age artists skillfully used unevenness of the rock walls to vividly depict the animals. The paintings were created over 15,000 years ago. Red, ocher and brown tones are the dominant colors. Charcoal was used for the contours and hatching.