Roizonne — Lavaldens → La Valette
Roizonne · Isère (38), Alpes du Nord
Grade
V
About
Classe IV-V. Steep little tributary of the Bonne in the Valbonnais/Taillefer country: about 5 km of sustained, technical creeking from the bridge upstream of Lavaldens down to La Valette. Continuous gradient, tight lines and a serious tree/wood risk typical of these narrow Isère valleys — check the level and the riverbed visually at the La Valette bridge before putting on. For confident class IV-V teams only. Season: Snowmelt May-June or after heavy rain; small steep catchment, short window Gauge reference: Visual check at the La Valette bridge (level reference used by locals)
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