DiscoverPlaces to seeFranceAuvergne Rhône AlpesMétropole de LyonPoleymieux-Au-Mont-D'Or
Passage between the rocks
DiscoverPlaces to seeFranceAuvergne Rhône AlpesMétropole de LyonPoleymieux-Au-Mont-D'Or
Passage between the rocks
Tips
Pascal
March 3, 2026
Hiking
These rocks, which suddenly appear after crossing a small meadow, are surprising. They resemble a mille-feuille pastry. They are of geological interest, consisting of layers of Sinnemurian limestone (Jurassic period, 190 million years ago) containing gryphaea oysters. Gryphaea oysters are a type of oyster that were found in very large numbers at the time (the region was, of course, underwater).
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Nearby routes
Best routes near Passage between the rocks
4.7
(11)
38
hikers
10.00km
03:05
380m
370m
Moderate hike. Good fitness required. Easily walkable paths.
Moderate
4.7
(11)
28
hikers
Moderate hike. Good fitness required. Easily walkable paths.
Moderate
4.8
(5)
30
hikers
5.87km
01:51
240m
240m
Easy hike. Easily walkable paths.
Easy
Details
Informations
Elevation 410 m
Weather
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Thursday 5 November
12°C
3°C
25 %
Additional weather tips
Max wind speed: 7.0 km/h
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Location: Poleymieux-Au-Mont-D'Or, Métropole de Lyon, Auvergne Rhône Alpes, France