Tips
Bugey Sud Grand Colombier
September 6, 2024
Mountain biking
The source of the Groin is one of the geological curiosities of Valromey, labeled "Sensitive Natural Area" by the Department of Ain.
The waters that come out of the basin come from underground streams formed by the infiltration of rainwater from Haut-Valromey and the Plateau de Retord. Depending on the period (dry or rainy), the basin is more or less full of water, or even empty. The differences in level are impressive.
The waters that come out of the basin come from underground streams formed by the infiltration of rainwater from Haut-Valromey and the Plateau de Retord. Depending on the period (dry or rainy), the basin is more or less full of water, or even empty. The differences in level are impressive.
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•Routes here
Best routes to Groin Spring
4.0
(2)
28
riders
44km
03:54
1,410m
1,410m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.
Hard
5.0
(1)
17
riders
40.8km
03:52
1,050m
1,040m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
Hard
4.0
(1)
2
riders
47.3km
04:10
1,230m
1,230m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
Hard
Details
Informations
Elevation 390 m
Weather
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Monday 2 March
16°C
2°C
0 %
Additional weather tips
Max wind speed: 4.0 km/h
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