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Quintana Roo Speleological Survey

Mexico QRSS, Quintana Roo Speleological Survey (QRSS)

A survey archive, created in 1990, that compiles confirmed survey data for the underwater and dry caves of Quintana Roo, Mexico, and publishes the standard lists of long and deep underwater caves in the state.

Site officiel ↗

The Quintana Roo Speleological Survey describes itself as supporting the safe exploration, survey and cartography of the underwater and dry caves of Quintana Roo. It was created in 1990 and keeps an archive of survey data contributed by many independent exploration teams. On its home page (last updated 2025-01-29) it reports confirmed data for more than 412 underwater caves and cave systems, totalling 1,736.7 km of underwater passage, plus 359.7 km of surveyed dry passage. It also archives water-chemistry, biological, archaeological and environmental observations [1].

QRSS is best known to divers for its ranked list of long underwater caves, in which each system's length, depth, number of cenotes and reporting team are given with a report date; in the January 2025 list Sistema Ox Bel Ha and Sistema Sac Actun hold the top two places [2]. The survey states that it does not reveal cave locations or where unexplored leads are, and it publishes a conservation code that treats diving in the region's caves as a privilege granted by landowners, asks divers not to collect fauna without a federal permit, and describes the threat that the predatory Mexican tetra poses to cave-adapted animals [1][3].

Pour aller plus loin

A short history of underwater cave exploration: dated milestones

Dated, sourced milestones in underwater cave exploration: Florida's pioneers and Sheck Exley, the 1987 and 1998...
8 min de lecture

Archaeology and palaeontology in underwater caves

Why flooded caves preserve Ice Age evidence, and what has been found: Naia and the extinct fauna of Hoyo Negro,...
8 min de lecture

Conservation, landowners and responsible access

How access to underwater caves depends on landowners and managers, with documented examples: Wakulla and Peacock...
7 min de lecture

Groundwater, haloclines and water quality in flooded caves

How karst aquifers move water through caves, what haloclines and anchialine waters are, why visibility changes with...
7 min de lecture

How underwater caves are surveyed and studied

An introduction to underwater cave survey: line surveys with stations, distance, compass bearing and depth; why...
7 min de lecture

How underwater caves form: karst, dissolution and drowned passages

An introduction to the geology of flooded caves: how acidic water dissolves limestone, the difference between young...
7 min de lecture

Life in flooded caves: stygofauna, remipedes and the diver's footprint

What lives in underwater caves, from remipedes discovered by a cave diver in 1979 to blind fish and methane-fed...
7 min de lecture

Threats to underwater caves today, and how they are protected

A dated overview of documented pressures on underwater caves: wastewater and nitrate, Tren Maya construction over...
7 min de lecture

Cave Areas of Quintana Roo (QRSS cave footprint map) ↗

An area-level map of known cave zones around Tulum, built by buffering survey lines by 250 m. It shows how...
Carte

Cave development on the Caribbean coast of the Yucatan Peninsula, Quintana Roo, Mexico ↗

Explains why Quintana Roo's flooded caves form a distinct type, dissolved where fresh and salt groundwater...
Article de recherche

Late Pleistocene Human Skeleton and mtDNA Link Paleoamericans and Modern Native Americans ↗

The key paper on Naia, the 13,000-12,000-year-old skeleton from Hoyo Negro in Sac Actun. It also gives a...
Article de recherche

Long Underwater Caves in Quintana Roo (QRSS list) ↗

A ranked table of surveyed underwater cave systems in Quintana Roo with lengths in metres, number of...
Base de données

Quintana Roo Speleological Survey (QRSS) ↗

A long-running project that gathers cave survey data for Quintana Roo, Mexico. It publishes length and...
Projet de relevé topographique

Review: The Yucatán Peninsula karst aquifer, Mexico ↗

The standard overview of the aquifer that contains Quintana Roo's caves: geology, the freshwater lens and...
Article de recherche
Sources: [1] Quintana Roo Speleological Survey ↗[2] Quintana Roo Speleological Survey ↗[3] Quintana Roo Speleological Survey ↗ · vérifié 2026-10-14
Chaque information de cette page, avec sa source (5)
InformationStatutSource
QRSS was created in 1990. Vérifié [1]
QRSS reports confirmed survey data for more than 412 underwater caves and cave systems totalling 1,736.7 km of underwater passage, and 359.7 km of dry passage.Figures from the home page last updated 2025-01-29; totals change as surveys are added. Vérifié [1]
QRSS states that it does not reveal cave locations or where going leads might be found. Vérifié [1]
In the QRSS list updated 2025-01-19, Sistema Ox Bel Ha is first and Sistema Sac Actun second among Quintana Roo's long underwater caves.Lengths are reported by the exploring teams and dated individually in the list. Vérifié [2]
QRSS describes diving in Quintana Roo caves as a privilege extended by landowners and says collecting biological samples without a Mexican federal collection permit is illegal. Vérifié [3]

Vérifié : indiqué par une source officielle ou primaire que nous avons consultée. Signalé : issu d'une source secondaire uniquement. Sources contradictoires : la note présente les deux versions. Peut être obsolète : la source la plus récente que nous avons trouvée est ancienne.

Rédigé dans nos propres mots à partir des sources ci-dessus. Signaler une correction

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