The Great Cave of Altamira is a famous prehistoric site located in northern Spain. It is renowned for its stunning cave paintings, which date back to the Upper Paleolithic period, around 36,000 years ago. The artwork primarily features bison, along with other animals, and showcases the artistic skills of early humans. Discovered in 1868, the cave is part of a larger complex that includes various chambers and passages. The paintings are significant for their use of natural contours and colors, providing insight into the lives and beliefs of our ancient ancestors. The site was designated a UNESCO World Heritage Site in 1985.