Cenotes and subterranean rivers form part of the complex system of the Quintana Roo aquifer. They are the only source of fresh water, the longest subterranean rivers in the world, and they support the whole economy of the most important tourist attraction in México. Preserving fresh water clean must be the crux of regional development. RAZONATURA A.C. works gathering information on the water quality of these systems and promotes technological and development alternatives.
Watch the following video from Azteca Noticias about Sac Actun, one of the longest subterranean rivers in the world.






