Techo de los policromos de Altamira

More than 35.000 years ago, a member of a community living at the entrance of Altamira advanced deeper into the cave and, in a lower ceiling, drew a big abstract sign among other figures. 20.000 years later, people from other communities that also lived at the entrance of the cave, added a charcoal drawing of some bisons to these drawings or paintings in red and black. Shortly after, a natural col…