Les 3 Vallées · France
Rocher Noir
Black (advanced)Grooming: classic
69
Excellent
1.4 km
Length
501 m
Vertical drop
2161 m
Starts at
1660 m
Ends at
36.4%
Avg gradient
54.7%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Rocher Noir is a black (advanced) run at Les 3 Vallées measuring 1.4 km, dropping 501 m from 2161 m down to 1660 m. It averages a 36.4% gradient, steepening to around 54.7% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 69/100 — Excellent
Vertical17/30
Length7/25
Gradient character25/25
Flow20/20
Scored from the run's real geometry — steepness is judged against what a black (advanced) run should feel like, so every difficulty class can reach 100. Methodology
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