Cenote Calavera, Tulum
It doesn’t take an ocean to evoke thalassophobia, or even a lake. A cenote is more than enough - but how much water is there under this cenote? The best answer we can give is: we don’t know.
This pool is part of an enourmous cave system of interconnected underground rivers known as Sistema Sac Actun, one of the largest underwater cave systems in the world. You could go diving in there and keep going for hundreds of kilometers of twisting underwater tunnels.
Discoveries in the waters of this cave system include the remains of mastodons and other Pleistocene fauna, and ancient human bones that vastly predate the Mayan civilization. According to divers and researchers, diving into these waters is like a time machine. The deeper you go, the farther back in time you travel.
