Las Brujas Cave - Cave of the Witches

At the beginning, the top-one cave voted in the list the best caves in Argentina - Las Brujas Cave - (Argentine: Caverna de las Brujas) - is part of a giant Jurassic limestone formation in Malargüe (Mendoza Province, Argentina) that contains various karst features and caverns. The Brujas Cave - Natural Reservation protects the entire area known as Bardas Blancas, and Caverna de las Brujas is the only tourist cave in the area. It's a kind of semi-wild cave in that it's closed with planned guided visits but not developed compared to the extent that first-world caves are.

The cave has no electricity or concrete walkways; the tourist area is a horizontal passage with a continuous ascent that demands sturdy boots but poses no exceptional challenges. Nevertheless Caverna de las Brujas is the most famous cave of Argentina and the only one at least partially prepared for tourism in this country.