Backcountry ski run (advanced)46.0092° N, 6.7334° EAdvanced
Onyx
Onyx is one of the marked, ungroomed descents in the semicircular Combe de Gers. Flaine identifies this as steep freeride terrain; its advertised 800-metre vertical applies to the wider area, not necessarily this stored line.
References
Flaine Tourist Office
Freeride and fun zones