Lanzarote · about 7 km from Haría
Túnel de la Atlántida
Closed to divers
No recreational diving: the entrance lies in a tourist centre and the tunnel is home to protected, endemic cave fauna. Only scientific expeditions with permission from the Cabildo de Lanzarote and the Canary Government.
- Max depth64 m
- CertificationFull cave
- SpecialExperienced divers
Diving and fills
Dive here with
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Fills nearby
- Fill stationManta Diving LanzaroteAir and nitrox (nitrox free with a package of 6 or more dives); walk-in fills for visitors: askRoute ↗
Now at Túnel de la Atlántida
What it looks like
All 1 videos and posts
Videos and posts
From other divers, via YouTube, Instagram and Facebook. They only load when you click; after that, Google's or Meta's privacy rules apply.
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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
You dive here in seawater, with a salinity of ~35.8 ‰. Per Wikipedia (es) the water is not stratified, so there is no real halocline; the Sublántida team does speak of unstable layering.
1 earlier accident or incident has been reported at this cave. Read what happened ↓
Profile and sections
You dive here in seawater, with a salinity of ~35.8 ‰. Per Wikipedia (es) the water is not stratified, so there is no real halocline; the Sublántida team does speak of unstable layering. The tidal range outside is up to 3 m; inside it is damped (~1 m per one source) and ~1 h delayed. There is hardly any silt, and per one source visibility is >60 m. Dozens of endemic species live in the tunnel, including the remipedes Speleonectes ondinae and S. atlantida; the blind crab Munidopsis polymorpha lives in the lake.
The tunnel is the submarine section of the Monte Corona lava tube, which also includes the Cueva de los Verdes and the Jameos del Agua, and is ~20,000 years old. Per the researchers of the 2008 expedition it is the longest known submarine lava tube. The end was reached in 1986. Research dives followed in 2008 (CCR, new species), 2011, 2019 (UNED, to the end again) and 2022–2023 (UNED, commissioned by the Cabildo).
- Depth and profile
- Entry lake -9 m · average ~-30 m (section 15–20 m) · 'La Sima' at ~130 m down to -22 m, second constriction at ~200 m · sand mound at ~700 m · end wall 1,618 m / -64 m · upper gallery Lago Escondido 390 m
- Configuration
- Expeditions dived open circuit (1983) and CCR (2008). Roomy passage with two constrictions; trimix for the far end.
- DPV: DPV possible (estimate)
- Roomy and 1.6 km long, but for permitted research teams only.
Who can dive where
- At least Full cave
- Configurations: Backmount / twinset / Sidemount / CCR
- Goes down to 64 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
Only through the Jameos del Agua, a tourist centre of the Cabildo (CACT): from the public area down to the lake in the Jameo Chico (~10 × 10 m, 9 m deep) and in from there. For permitted research teams only.
Around Túnel de la Atlántida
Fills1 fill station · 35 km
Manta Diving Lanzarote
Calle Tenerife 2, 35510 Puerto del Carmen
Air and nitrox (nitrox free with a package of 6 or more dives); walk-in fills for visitors: ask
Mon–Sat 8:30–16:30, Sunday closed
Dive centre in Puerto del Carmen (SSI Diamond Training Centre) with guided shore and boat dives, including La Catedral and the Blue Hole.
Caves nearby3 within 35 km
News
All (1)
Accidents and incidents
What happened at this cave before, with the sources. No names are given; read it as a lesson for your own planning.
- 1983: gear failed at maximum penetration on an expedition; several out-of-gas emergencies followed, resolved by gas sharing and dropped cylinders.
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 13 Nov 2026.
More of the latest in Lanzarote (Canary Islands, Spain): conditions, closures and news →Going to Lanzarote with your team?
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