Caverna de los Guácharos

Cave in Río Claro

A spectacular cave, about 1km long, featuring numerous caverns, soaring high and hollow like great cathedrals, connected by a fresh stream. The entrances are guarded by shrill, shrieking flocks of guácharos, a batlike nocturnal bird. You can only visit on a guided tour; you’ll be given a life vest and be expected to swim part of the way.