Explore the Grutas de Rancho Nuevo

This impressive complex of underground caves was only discovered in 1947. There are innumerable stalactites and stalagmites, which in some cases have fused together to form columns. It is believed that these caverns extend for several miles underground, although the regular 45-minute tour takes visitors along an illuminated pathway that is around 3,280 feet long. The guides, who are children, perform entertaining impressions of the bizarre shapes of the rock formations. Next to the entrance to the caves is a forest, where you can enjoy horseback rides (there are usually guides who rent out horses), hiking and camping, and there are also zip-lines, barbecues, a couple of concrete slides and a playground.