Swimming in a sacred Mayan cenote sinkhole in Valladolid

Around Valladolid, a natural water-filled sinkhole looks like a cave pool with limestone walls and green water. Plant roots hang down the walls. Swimming in the cool water, or simply sitting at the edge to hear the echo, is what time here comes down to.

The ground can be slippery where you enter the water. Bring swimwear, a towel and a light wrap. Step in slowly and let your body adjust to the chill. To protect the water, you may be asked to rinse off lotions first.