Slot Canyon Atlas

AtlasSwitzerland - Ticino

Iragna (Lower)

verified Ungraded High flood risk Iragna, Ticino

Polished granite slot in the lower Leventina, seven rappels with a 50 meter signature drop.

Iragna has three sections: Upper, Middle, and Lower. Lower is the most-traveled and shortest. Wetsuit required even in midsummer, water runs cold from glacier melt all season. Bolts well-maintained on this classic but verify on community forums before going.

Logistics

ManagerComune di Iragna / Cantone Ticino
PermitNo permit required.
Distance0.3
Elevation~427 ft loss
Time1.5-7.5 hr (20-25 min approach, 2-7 hr descent, 3-5 min exit)
TechnicalClassic Ticino granite descent. 7 rappels, longest about 164 ft. Sustained vertical work in a polished granite slot. Ropewiki rates 4C1 II (v4a4 III). Swift water hazard at flow; wetsuit mandatory, water is cold meltwater off the Lepontine Alps.
SeasonJun-Sep
Flood riskHigh. Granite catchment spikes fast on summer thunderstorms. Cancel on rain forecast in the Leventina drainage.
Vehicle access2WD, optional 1.0 km shuttle
CrowdModerate, classic but not over-trafficked
Coordinates46.329, 8.9635

Sources