Distance: 6.4km
Time: 2h
City: Le Perray-en-Yvelines
In the event of heavy rain the day before, choose the route de la vallée noire after the Coupe Gorge pond, more passable and wider if you are with family or friends.
For families wishing to discover this sector by bike, a cycle path of about 8km is located a few meters after the starting point and leads you straight to the Etangs de Hollande. More details on the IGN map or on the website www.geoportail.gouv.fr
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