Watch day turn to night as you descend into the dark recesses of Caves of Altamira. Armed with a sturdy flashlight and a sense of adventure, there's no telling what you might discover down there.
You'll soon see why this Santillana del Mar natural underground attraction is a hit with travelers. If you're looking for more to explore, Santillana del Mar Zoo, Collegiate Church of Santillana del Mar, and Museum of the Inquisition are in this area too. They won't take long to get to from Caves of Altamira.
