Cenote Dos Ojos is a flooded cave system located north of Tulum on the Caribbean Coast on the Yucatan Peninsula Quintana Roo, Mexiko. It is known officially as Sistema Dos Ojos. Cenotes is the local name for the sinkhole entrances. The cave system encompases 51 miles and is still being explored. The name Dos Ojos refers to two large cenotes that resemble two large eyes into the underground.