
Corsica · France · Reef
Roche Rouge
Red volcanic rock from 10 to 35 m near Cargèse
Area photo: Myrabella · CC BY-SA 3.0
A red volcanic rock formation near Cargèse with depths from 10 to 35 m. The rock colour is the reason the site has a name on this coast, and the catalogue lists it for divers of all levels, so it works either as a shallow rock tour along the upper formation or as a deeper profile down to the base.
Where it is and how deep
42.1329° N, 8.6054° EPublished position for this site.
The dive
The site is a rock formation off Cargèse whose upper reaches sit at about 10 m, so the descent from the boat brings you onto the rock quickly and the first part of the dive can be shallow. The rock is volcanic and red, which is what gives the site its name and sets it apart from the other rock sites on this coast, and the colour is best seen on the upper formation where there is still light to carry it.
From the top the rock runs down to 35 m, and the deeper section turns a shallow rock tour into a dive that needs planning: at 35 m the no-decompression time is short and the red has gone grey, so the usual pattern is to visit the base early and spend the rest of the dive working back up the face. The catalogue rates the site for all levels, which fits that structure, with the newer diver staying on the upper rock and the trained diver taking the whole profile before a safety stop near the top.
Marine life and season
The sources we used don't single out particular species here.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Off-season | Off-season | Off-season | Fair | Good | Prime | Prime | Prime | Prime | Good | Fair | Off-season |
Season follows Corsica: West-coast centres run roughly April to November; the sea is above 20 °C from June to October and averages under 14 °C in February.
Questions divers ask
How deep is Roche Rouge?+
The formation runs from 10 m at the top to 35 m at the base, so a diver can stay shallow on the upper rock or take the full profile with the right training.
Sources
More dive sites in Corsica
Reef
Sand and rock from the surface to 30 m in clear water
Pinnacle
Rock heads rising from 40 m to the surface
Reef
Depths from 10 to 40 m in clear water off Ajaccio
Reef
Plateaus at 6, 12 and 20 m before the drop-offs
Wreck
A 1944 P-51 Mustang fuselage on sand at 19 m
Cave & cavern
Tunnels and vaults in the rock down to 40 m
Similar dives elsewhere
Uninhabited islet on the park's authorised diving list
Imposing grouper circle the rocks down to 35 m
Deep rock at 26–35 m rising to a garden at 8 m
White gorgonian at 35–40 m, dived on technical setups



