- Sistema Ox Bel Ha
Ox Bel Ha Cave System Location Quintana Roo, Mexico Depth 34.7 meters (114 ft) Length 231.176 kilometers (143.646 mi) Cave survey Grupo de Exploración Ox Bel Ha Discovery February 1996 Geology Limestone Number of entrances 137 Cenotes Difficulty Advanced cave diving
Ox Bel Ha (from Mayan meaning "Three Paths of Water"; officially Sistema Ox Bel Ha) is a cave system in Quintana Roo, Mexico. It is the longest explored underwater cave in the world and ranking no. 4 including dry caves. As of October 2011 the surveyed length is 231.2 kilometers (143.7 mi) of underwater passages.
- ^ a b c d "List of Long Underwater Caves in Quintana Roo Mexico". Quintana Roo Speleological Survey. National Speleological Society (NSS). October 9, 2011. http://www.caves.org/project/qrss/qrlong.htm. Retrieved October 9, 2011.
- ^ Michael Poucher, Bob Gulden (July 11, 2011). "World longest underwater caves". Geo2 Committee on Long and Deep Caves. NSS. http://www.caverbob.com/uwcaves.htm. Retrieved October 3, 2011.
- ^ Bob Gulden (July 11, 2011). "Worlds longest caves". Geo2 Committee on Long and Deep Caves. NSS. http://www.caverbob.com/wlong.htm. Retrieved October 3, 2011.
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