Dos Ojos Cenote, Mexico
Photo Credit: Reinhard Dirscherl/ullstein bild via Getty Images
Dos Ojos or “Two Eyes” is part of an underwater cave system in Tulum, located in the state of Quintana Roo, Mexico. Exploration of the cave system began in 1987 and continues today. In 2018, a connection between Dos Ojos and Sac Actun was found, making Dos Ojos part of Sac Actun.
This connection between the two then made Sac Actun the most extensive underwater cave system in the world. The cave system got its name from two adjacent cenotes that look like a pair of eyes and share a cavern. The water in the caves is also particularly clear because rainwater is filtered through the limestone and there is very little soil to be found.