Provinz Yauyos
Qaqa Mach'ay (Quechua for "rock cave") is a limestone cave located in the Yauyos Province of the Lima Region in central Peru, high in the Andes Mountains that was explored and surveyed in 2004 by an international expedition. At 4,930m above sea level, it is the highest surveyed cave in the world. The entrance to the cave is in the mountain named Wamp'una.