The article discusses the water supply of the Yucatan Peninsula in Mexico. The author discusses the peninsula's geographic location bordering the Gulf of Mexico and notes the low number of viable ports on the peninsula. The division of the region into the Mexican states of Yucatan and Campeche is commented on. The climate of the peninsula, its lack of lakes and statistics regarding the mortality of its population are noted. The author comments on speculation that the northern portion of the peninsula was once under the ocean. Wells dug throughout the peninsula do not offer a sufficient supply of water for the population, but water can also be procured from the Sartenejas, a series of hollows that are filled by rain, as well as a series of caverns called Cenotes.