There are four types of cenotes: Partially open or pitcher-shaped, open or free fall, ancient cenotes or aguadas, and cave-type cenotes. A large number of cenotes that have been conditioned to be visited, some of the most beautiful are: Chelentún, Chaczinicche, Bolonchoojol, Elepetén, Ik kil, Kambulnah, Kankirixché, Nayah, Papakal, Samulá, X-Batún, X-Canché, X 'Kekén, Zací and Xcanahaltún.