Serre Chevalier · France
Rocher de l'Enfer
Red (intermediate)
53
Very good
622 m
Length
133 m
Vertical drop
2243 m
Starts at
2110 m
Ends at
21.2%
Avg gradient
36%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Rocher de l'Enfer is a red (intermediate) run at Serre Chevalier measuring 622 m, dropping 133 m from 2243 m down to 2110 m. It averages a 21.2% gradient, steepening to around 36% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 53/100 — Very good
Vertical4/30
Length3/25
Gradient character25/25
Flow20/20
Scored from the run's real geometry — steepness is judged against what a red (intermediate) run should feel like, so every difficulty class can reach 100. Methodology
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