“Experts have discovered a cave full of prehistoric carvings in northern Spain. Among the hundreds of rock carvings, some believed to be 15,000 years old, are vivid depictions of horses, deer, and bulls, as well as a wealth of mysterious and abstract symbols. Unlike the famous prehistoric paintings at Altamira in northern Spain, the recently discovered cave art in Catalonia is carved directly into the soft surface of the rock.” – Artnet