Yucatan Peninsula

The Yucatan Peninsula is a large limestone peninsula in southeastern Mexico that separates the Gulf of Mexico from the Caribbean Sea, also extending into parts of Belize and Guatemala. Its flat karst terrain holds almost no surface rivers, instead draining through an extensive network of underground rivers and sinkholes known locally as cenotes, many of which were sacred sites to the ancient Maya, whose civilization was centered on the peninsula. The peninsula's northern tip is also associated with the Chicxulub impact crater, widely linked to the mass extinction that ended the age of dinosaurs.