Riviera Maya (Quintana Roo) · about 13 km from Tulum
La Concha
- Max depth12 m (39 ft)
- CertificationFull cave
- Water temperature≈ 24–25 °C (75–77 °F)estimated, no reports yet
- SpecialSidemount
Diving and fills
Dive here with
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Fills nearby
- ProTec TulumAir, EAN32, O₂ up to 200 bar, trimix on request (booster); Sofnolime 797 always in stock
- Third Dimension DivingEAN32, HP O₂, deco gases and any trimix (booster); Sofnolime 797 and Intersorb; prefilled trimix bailout for rent
- Ko’ox Diving (Tulum)Air, nitrox, O₂ and helium mixes (He about US$2/cf)
What it looks like
All 2 videos and posts
Videos and posts
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Other people's footage, not advice: how someone else dives here says nothing about what suits your team. Dive within your training.
The dive
Right at the entrance of La Concha the line splits at a T (left/right), with more Ts beyond. You can also get here via a jump from Pedrín Fenómeno.
Part of Sistema Sac Actun. Also in this system: Dos Ojos, The Pit (El Pit), Taak Bi Ha, Nicte-Ha, Pet Cemetery (Cenotes Sac Actún), Dreamgate, Nohoch Nah Chich, Casa Cenote (Manatí), Gran Cenote, Calimba (Kalimba), Dos Palmas, Otoch Ha (Nariz), Ho-Tul / Cuzan Nah, Outland, Pedrín Fenómeno, Chun-Ya
Profile and sections
Right at the entrance of La Concha the line splits at a T (left/right), with more Ts beyond. You can also get here via a jump from Pedrín Fenómeno. You swim past columns, stalagmites and helictites, and it is always clear (dive log: 2.5 km in 3¾ h).
La Concha was originally Sistema Actun Hu (Maya: ‘iguana cave’) and is now part of Nohoch/Sac Actun. Sistema Sac Actun (Maya: ‘white cave’): 379.6 km surveyed, down to -119.2 m (QRSS, Jan 2025).
Practical: certified cave divers only. Fee unknown. Fer-de-lance snakes (nauyaca) have been seen around the entrance.
- Depth and profile
- About -10 m right after the entrance (max depth unknown, shallow)
- Configuration
- Narrow 'gateway' at the entrance: sidemount easiest; backmount and CCR with care
- DPV: unknown
- No DPV reports found. Narrow gateway right at the entrance and fragile decoration (helictites) favour finning; ask locally
Who can dive where
- At least Full cave
- Configurations: Backmount / twinset / Sidemount / CCR / Small cylinders / no-mount (speleo sumps)
- Goes down to 12 m (trimix or deco may be needed)
- Experienced divers only
This is how the planner decides who in your team may dive this cave. Rules your own trip adds (organizer, a mail, the AI) show with your trip.
How to get there
Same jungle track as Otoch Ha (about 8 km of rough dirt road from Hwy 307; 4x4). Half-collapsed sinkhole with a big álamo tree; shallow sandy entry. Ask Zero Gravity about access.
Around La Concha
Fills3 fill stations · nearest 12 km
ProTec Tulum
Av. Satélite / Calle Tun-Kul, Tulum
Air, EAN32, O₂ up to 200 bar, trimix on request (booster); Sofnolime 797 always in stock
Daily 8–19
Rental of CCR, scooters, sidemount and double cylinders; CCR room for 14 units. ProTec Playa merged into Tulum in 2026. Keys for Xa'ay Ha (Chi Keen) and Doggi/Style (Muyil) are collected here.
Third Dimension Diving
Calle Chemuyil Mz 14 Lt 01, Mayapax, Tulum
EAN32, HP O₂, deco gases and any trimix (booster); Sofnolime 797 and Intersorb; prefilled trimix bailout for rent
Unknown — call
Rental of backmount, sidemount, CCR cylinders, Suex scooters and stages. In Tulum (Mayapax neighbourhood, west of the 307).
Ko’ox Diving (Tulum)
Tulum
Air, nitrox, O₂ and helium mixes (He about US$2/cf)
Daily 7:30–21:00
Fills CCR, stage and double cylinders; cave gear for rent. Card payment accepted. The site also lists a Puerto Aventuras branch (Hwy 307 km 269.5, 7:30–21:00), but it is not on Google Maps — ask whether it exists and fills.
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Other sites6 within 2 km
News
All (5)
Nearby
Articles about cave diving that name a place within 25 km of this site, but no cave by name. They're not necessarily about this site.
- A Diver Found a Skeleton at Least 8,000 Years Old Hidden 26 Feet Underwater in a Flooded Cave in Mexico ↗
- Cave-divers find trapped spearfisher alive after 15 days ↗
- Cave diving is fraught with danger, but the reward is sights like nothing else on Earth ↗
- INAH files legal complaint for diver damage to underwater archaeological site in Tulum cave ↗
- A Diver Found 8,000-Year-Old Human Remains Deep Inside an Underwater Cave ↗
Access and rules change: check what applies locally right before your trip. Source: GDELT Project and the news feeds of diving magazines. Search for more news ↗ Searched automatically, last on 11 Nov 2026.
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