AtlasJura

Coiserette

verified Ungraded Unknown flood risk
Coiserette
Benoît Prieur, CC0, via Wikimedia Commons

A Jura limestone run on the Tacon, a short approach and a 25 meter rappel over 1.4 kilometers, though drought related closures have restricted hours here in recent seasons.

Access can be limited to morning hours only under prefectural drought orders covering the Tacon and Bienne system; confirm current status before a summer visit.

Logistics

ManagerPréfecture du Jura
PermitNo permit is issued, but as of July 2026 an arrêté préfectoral du Jura (10 July 2026) restricts canyoning on the Tacon, the Bienne, and their tributaries, including this canyon, to 8am until noon, due to drought conditions. Drought orders like this one are temporary; check descente-canyon.com for current status before a visit.
Distance1400m
Time3 hr
Technicallongest 25m
SeasonSummer
Coordinates46.3461, 5.8373

Sources