AtlasHaute-Garonne

Gouffre d'Enfer

verified Ungraded Unknown flood risk

The name translates to Hell's Chasm, and the numbers back it up: aquatic rating a6, the maximum on ropewiki's scale, with commitment rated V. A 1000 meter canyon dropping 425 meters, typically 7 to 12 hours car to car, best run late summer into fall.

Best season is listed as September and October, plus August: a narrow late season window. The longest single rappel is 35 meters. This is one of the more serious objectives in this batch on the water alone, given the a6 rating, and should not be underestimated.

Logistics

PermitRequired, verify with land manager
Distance1000m
Time7 hr-11 hr
Technicallongest 35m
SeasonSep-Oct;Aug
Coordinates42.7356, 0.5556

Sources