| AE Vertigo Mexico - Espeleologia Caving: Promotes exploration, study and conservation. Offers training and trips. Bilingual Spanish/English. |
| Association for Mexican Cave Studies: Participates in the study, exploration and conservation of caves in Mexico. Official project of the National Speleological Society since 2001. Includes contact information. |
| Grupo de Exploracion Ox Bel Ha: A club dedicated to the exploration, survey and research of the cenotes and underground rivers of the Yucatan Peninsula. |
| Mexico Profundo: Founded in 1982 and devoted to exploration, surveying and mapping of water-filled caves. Includes descriptions of projects, expedition journals and contact information. |
| Proyecto Cerro Rabón: Speleological exploration in the Cerro Rabón area of the Sierra Mazateca, Oaxaca, Mexico. Galleries, journals, pictures and newsletters. |
| Quintana Roo Speleological Survey: Supports the safe exploration, survey and cartography of the underwater caves and cenotes. Includes maps, conservation notes, geologic history and contact information. |
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