Underwater: 378.56 km (235.23 mi)[1] Total: 386.122 km (239.925 mi)[2]
Discovery
November 26, 1987
Geology
Limestone
Entrances
228 Cenotes[1]
Difficulty
Advanced cave diving
Sistema Sac Actun (Yucatec Maya: sak aktun, lit. 'white cave', Spanish: sistema, lit. 'system') is an underwater cave system situated along the Caribbean coast of the Yucatán Peninsula with passages to the north and west of the city of Tulum. Discovery of a connection to Sistema Dos Ojos in 2018 made it the longest known underwater cave system. As of January 2023[update], it is the second longest underwater cave system in the world, only surpassed by Sistema Ox Bel Ha.
The remains of a mastodon and a human female that might be the oldest evidence of human habitation in the Americas have been found in the cave.
^ abc"List of Long Underwater Caves in Quintana Roo Mexico". Quintana Roo Speleological Survey. National Speleological Society (NSS). January 10, 2023. Retrieved 10 January 2023.
^"Dry Caves and Sumps of Quintana Roo Mexico". Quintana Roo Speleological Survey. National Speleological Society. January 10, 2023. Retrieved 10 January 2023.
SistemaSacActun (Yucatec Maya: sak aktun, lit. 'white cave', Spanish: sistema, lit. 'system') is an underwater cave system situated along the Caribbean...
was found between Sistema Dos Ojos and SistemaSacActun. The smaller Dos Ojos became a part of SacActun, making the SistemaSacActun the longest known...
extensive underwater cave systems, such as Sistema Ox Bel Ha, SistemaSacActun/Sistema Nohoch Nah Chich and Sistema Dos Ojos. The Yucatán Peninsula contains...
Municipality of Quintana Roo state, southeastern Mexico. It is part of the SistemaSacActun underwater cave systems. It is an extensive water filled cave system...
subterranean rivers. The longest subterranean river in the world is the SistemaSacActun cave system in Mexico. Subterranean rivers can also be the result...
seventh-longest cave in the world, after Mammoth Cave, SistemaSacActun, Jewel Cave, Shuanghedong and Sistema Ox Bel Ha. It is also the longest gypsum cave in...
October 9, 2022. "CINDAQ 2023 Annual report". El Centro Investigador del Sistema Acuífero de Quintana Roo A.C.(CINDAQ). February 15, 2024. Retrieved June...
Pollatoomary Ricks Spring The Shaft Sistema Dos Ojos Sistema Huautla Sistema Nohoch Nah Chich Sistema Ox Bel Ha SistemaSacActun Uamh an Claonaite Vortex Spring...
Sistema Huautla is a cave system in the Sierra Mazateca mountains of the southern Mexican state of Oaxaca. As of April 2021[update] it is the deepest...
Pollatoomary Ricks Spring The Shaft Sistema Dos Ojos Sistema Huautla Sistema Nohoch Nah Chich Sistema Ox Bel Ha SistemaSacActun Uamh an Claonaite Vortex Spring...
Pollatoomary Ricks Spring The Shaft Sistema Dos Ojos Sistema Huautla Sistema Nohoch Nah Chich Sistema Ox Bel Ha SistemaSacActun Uamh an Claonaite Vortex Spring...
Sistema Ox Bel Ha (Spanish: sistema, lit. 'system', Yucatec Maya: ox bel ha, lit. 'Three Paths of Water'; short Ox Bel Ha) is a cave system in Quintana...
Pollatoomary Ricks Spring The Shaft Sistema Dos Ojos Sistema Huautla Sistema Nohoch Nah Chich Sistema Ox Bel Ha SistemaSacActun Uamh an Claonaite Vortex Spring...
Pollatoomary Ricks Spring The Shaft Sistema Dos Ojos Sistema Huautla Sistema Nohoch Nah Chich Sistema Ox Bel Ha SistemaSacActun Uamh an Claonaite Vortex Spring...
Pollatoomary Ricks Spring The Shaft Sistema Dos Ojos Sistema Huautla Sistema Nohoch Nah Chich Sistema Ox Bel Ha SistemaSacActun Uamh an Claonaite Vortex Spring...
Pollatoomary Ricks Spring The Shaft Sistema Dos Ojos Sistema Huautla Sistema Nohoch Nah Chich Sistema Ox Bel Ha SistemaSacActun Uamh an Claonaite Vortex Spring...
Pollatoomary Ricks Spring The Shaft Sistema Dos Ojos Sistema Huautla Sistema Nohoch Nah Chich Sistema Ox Bel Ha SistemaSacActun Uamh an Claonaite Vortex Spring...
for part of its length. Mammoth Cave, Kentucky, US Sistema Ox Bel Ha, Mexico SistemaSacActun/Sistema Dos Ojos, Mexico Jewel Cave, South Dakota, US Shuanghedong...
system; subsumed into SacActun in early 2007 Sistema Ox Bel Ha (Quintana Roo), world's longest underwater cave system SistemaSacActun (Quintana Roo), world's...
Pollatoomary Ricks Spring The Shaft Sistema Dos Ojos Sistema Huautla Sistema Nohoch Nah Chich Sistema Ox Bel Ha SistemaSacActun Uamh an Claonaite Vortex Spring...
Pollatoomary Ricks Spring The Shaft Sistema Dos Ojos Sistema Huautla Sistema Nohoch Nah Chich Sistema Ox Bel Ha SistemaSacActun Uamh an Claonaite Vortex Spring...
25-year-old human female found in the Naharon section of the underwater cave Sistema Naranjal in Mexico near the town of Tulum, around 80 miles (130 km) south...
Jolja' Juxtlahuaca Loltun Cave Ndaxagua Sistema Dos Ojos Sistema Nohoch Nah Chich Sistema Ox Bel Ha SistemaSacActun Tolantongo Zacatón Bayano Caves Aeolus...
Pollatoomary Ricks Spring The Shaft Sistema Dos Ojos Sistema Huautla Sistema Nohoch Nah Chich Sistema Ox Bel Ha SistemaSacActun Uamh an Claonaite Vortex Spring...
Pollatoomary Ricks Spring The Shaft Sistema Dos Ojos Sistema Huautla Sistema Nohoch Nah Chich Sistema Ox Bel Ha SistemaSacActun Uamh an Claonaite Vortex Spring...
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