Chevé Cave (/ˈtʃeɪveɪ/CHAY-vay; Spanish: Cueva Chevé) is a deep cave located in the Sierra Juárez mountain range in the southern Mexico state of Oaxaca. As of 2003, its deepest point has been measured at 4,869 feet (1,484 m) deep, making it the second deepest known cavern in the Western Hemisphere and the world’s 12th deepest cave.[1] The cave's deepest known point is nearly one vertical mile and seven horizontal miles from the entrance, ending in a terminal sump. The present limit of exploration in Chevé, at 9.3 kilometers from the nearest entrance, represents one of the most remote locations ever attained inside any cave on Earth. The logistics of reaching this point are enormous: more than two kilometers of rope need to be rigged and three underground camps established.[2] Chevé is the deepest proven freshwater hydrological system in the world.[3] Temperatures in Chevé are moderate, ranging from 47 to 52 °F (8 to 11 °C). It has been most thoroughly explored under the leadership of caver Bill Stone.[4]