Seen as a paradise for world-class climbing and archeological research, Hueco Tanks encompasses three low mountains that rise 6,787 feet above sea level. Its structure once sheltered tribes such as the Jornada Mogollan People, Mescalero Apaches and Tigua Indians, giving them a stronghold. Here, thousands of rock and cave paintings of masks and stories can be observed. The famous structure of this arroyo provides unique hollows, or huecos, that capture rainwater. For a dry and weary land, Hueco Tanks can hold pockets of water for months at a time while the Chihuahua Desert lays baked. Known as the best spot for bouldering in the world, the ideal time to visit is November through March when it is not as hot.