A cenote is “a deep sinkhole in limestone with a pool at the bottom that is found especially in Yucatán.”

A cenote is the result of collapsed limestone which exposes water beneath.

There are four classifications of cenotes; ancient, cavern, semi-open and open. The more open the cenote indicates how long ago it was formed.

Take caution when visiting a cenote as some are prone to caving into the water below and could possibly be fatal for explorers.

• Side note: The ancient Maya used cenotes as a water source and sacrificial offerings.