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ExploreVery low slope <5% %
Low slope <7% %
Moderate slope <10% %
Steep slope <15% %
Very steep slope >15% %
La Vallée de l'Aa forme des coteaux crayeux bordés par le fleuve. Les pentes abruptes montrent des pelouses calcicoles parsemées de bois, constituées en une vaste Réserve Naturelle nationale, pour leur biodiversité : on peut y observer de nombreuses espèces protégées, d'orchidées et de papillons notamment.
This route is labeled FFVélo VTT Base. It has been validated and controlled by the French Cyclotourism Federation, in conjunction with local communities and clubs.
On the ground, let yourself be guided on this route using the yellow (most common) or brown markers.
As the On Piste team has not identified this route, it does not have voice guidance, identification of points of tourist interest, or good addresses nearby.
Find this route on www.veloenfrance.fr, the website of the French Federation of Cycle Tourism.