The Yucatan Peninsula is known for its cenotes. These are natural sinkholes that form when limestone bedrock collapses, revealing an underground water reservoir.

Here are some other physical features found on the Yucatan Peninsula:

* Low-lying coastal plains: The peninsula is relatively flat, with most of its land lying below 300 meters in elevation.

* Tropical rainforest: The interior of the peninsula is covered in dense rainforest.

* Mangrove swamps: Along the coast, there are extensive mangrove swamps.

* Barrier reefs: The Yucatan Peninsula is home to the second-largest barrier reef in the world, the Mesoamerican Barrier Reef System.

Let me know if you have any other questions about the Yucatan Peninsula!