Cenote Calavera, also known as the ‘Temple of Doom’, is located just outside Tulum in Mexico. I booked my trip to Mexico and after a couple of days in Mexico City and Cancun, I was in Tulum. I went to see the Temple of Doom almost immediately after coming there. It is a 25 feet diameter hole with a large undercut ledge. The water is about 20 feet below the ground level so the easiest way to get into the water is to jump right in. Once under the water, you can see rather impressive cages and narrow passageways. Although beautiful, the underwater cave system is a dangerous place to be. Divers are strongly advised to stay within daylight area as it’s very easy to get lost and disorientated in the dark.