Zacatón

Zacatón is a cenote (a thermal water-filled sinkhole) belonging to the Zacatón system - a group of unusual karst features located in Aldama Municipality near the Sierra de Tamaulipas in the northeastern state of Tamaulipas, Mexico. It is the deepest known water-filled sinkhole in the world with a total depth of . The deep Pozzo del Merro is deeper (actual depth unknown), but Using an autonomous robot, the underwater portion of Zacatón has been measured to be deep (a difference between the r…