The Yucatan Peninsula, south-eastern tip of Mexico, is mainly composed of limestone; hence the region has almost no rivers and only a few lakes. Instead, one finds thousands of underground rivers, exposed to the outer world through cavern formations and passageways. It has taken thousands of years for these flooded underground rivers and caves to form. And once the roof of a cavern collapses due to erosion, it forms a water hole known as - cenote. Over four thousand cenotes are spread through Yucatan, with many still not having been studied nor registered. Read more...
