Puente del Diablo (Devils Bridge)

The Devil's Bridge (Puente del Diablo) is a river cave with several speleothems and karst fenster. It is also judged as the best cave of Argentina. The cave is located on the Rio Calchaqui, about 3 kilometers south of La Poma. La Poma is more than 3,000 meters above sea level, and the valley is located in the Andes. What makes the cave unique and distinctive is that the formation of the karst caves is a result of volcanism, leading to a recognition of one of the best caves in Argentina. Ago, the nearby twin volcanoes Los Gemelos erupted, covering the Rio Calchaqui valley in lava.

Since the cave is located in the gorge, this is also a constraint to approach the cave. It was known to the native people since ancient times, they used it as a natural bridge to cross cattle. However, pitifully, they never entered the cave, since the legends and beliefs claim that the Devil resides there. Thanks to examinations of the area discovered numerous caverns, prompting the Argentine Federation of Speleology (FADE) to arrange a water cave exploration course, several locals took part and are now highly skilled cave guides who lead cave hiking tours.