Cenotes
are surface connections to subterranean water bodies. While the best-known cenotes are large open water pools
measuring tens of meters in diameter, such as those at Chichen Itza in Mexico, the greatest number of cenotes are
smaller sheltered sites and do not necessarily have any surface exposed water. Some cenotes are only found through small
1 m diameter holes created by tree roots, with human access through enlarged holes, such as the cenotes Cenote Choo-Ha,
Tamcach-Ha, and Multum-Ha near Tulum. There are at least 6,000 cenotes in the Yucatán Peninsula of Mexico.
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