Climbers at the bottom of the Golondrinas cave in Aquismon Region, Mexico. The towering walls of rock range from 325 feet tall to the deepest open-air pit in the world, Sotano de las Golondrinas (Cave of Swallows), which is over 1000 feet deep.
The Amazing Rock Village - Setenil de las Bodegas. A town (pueblo) in the province of Cádiz, Spain, famous for its dwellings built into rock overhangs above the Rio Trejo. It has an exact antipodal city: Auckland, New Zealand.
underground caves at Rio Secreto, Mexico One of the many spots I will be visiting. Also one of the most beautiful underground rivers, Mexico's longest underground cave and I will be crossing this off my bucket list!