Sistema Sac Actun (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Sistema Sac Actun" in English language version.

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8,735^th place

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caves.org

"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.

"CINDAQ 2022 Annual report". CINDAQ. El Centro Investigador del Sistema Acuífero de Quintana Roo A.C.(CINDAQ). January 26, 2023. Retrieved February 3, 2023.
"Cave Archeology of Early Americans" (PDF). News from the Field. El Centro Investigador del Sistema Aquífero de Quintana Roo: 6. Winter 2011. Archived from the original (PDF) on 2015-02-06. Retrieved October 10, 2013.

"Underwater cave is the world’s biggest", Mexico Daily News, January 15, 2018, https://mexiconewsdaily.com/news/underwater-cave-is-worlds-biggest/ (accessed 2018-01-17).

John Roach (March 5, 2007). "World's Longest Underground River Discovered in Mexico". National Geographic News. National Geographic. Archived from the original on March 11, 2007. Retrieved January 14, 2011.
Hodges, Glen (2014-05-14). "Most Complete Ice Age Skeleton Helps Solve Mystery of First Americans". National Geographic. Archived from the original on May 16, 2014.

"World's Largest Underwater Cave Discovered". National Geographic News. 2018-01-17. Archived from the original on August 4, 2019. Retrieved 2020-05-11.

Fabio Esteban Amador (February 18, 2011). "Skull in Underwater Cave May Be Earliest Trace of First Americans". National Geographic. Archived from the original on April 26, 2021. Retrieved April 23, 2021.

John Roach (March 5, 2007). "World's Longest Underground River Discovered in Mexico". National Geographic News. National Geographic. Archived from the original on March 11, 2007. Retrieved January 14, 2011.
Michael Poucher, Bob Gulden (March 21, 2017). "World longest underwater caves". Geo2 Committee on Long and Deep Caves. NSS. Archived from the original on June 2, 2011. Retrieved May 26, 2017.
Bob Gulden (January 22, 2020). "Worlds longest caves". Geo2 Committee on Long and Deep Caves. NSS. Archived from the original on May 15, 2006. Retrieved March 24, 2020.
"World's Largest Underwater Cave Discovered". National Geographic News. 2018-01-17. Archived from the original on August 4, 2019. Retrieved 2020-05-11.
"Cave Archeology of Early Americans" (PDF). News from the Field. El Centro Investigador del Sistema Aquífero de Quintana Roo: 6. Winter 2011. Archived from the original (PDF) on 2015-02-06. Retrieved October 10, 2013.
Fabio Esteban Amador (February 18, 2011). "Skull in Underwater Cave May Be Earliest Trace of First Americans". National Geographic. Archived from the original on April 26, 2021. Retrieved April 23, 2021.
Hodges, Glen (2014-05-14). "Most Complete Ice Age Skeleton Helps Solve Mystery of First Americans". National Geographic. Archived from the original on May 16, 2014.