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France
Ile-de-France

Béorlots Sand Dune

Discover
Places to see

Natural Monuments

France
Ile-de-France

Béorlots Sand Dune

Highlight • Natural Monument

Béorlots Sand Dune

Recommended by 10 road cyclists out of 11

This Highlight is in a protected area

Please check local regulations for: Réserve de biosphère de Fontainebleau et du Gâtinais

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    Location: Ile-de-France, France

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    Best Road Cycling Rides to Béorlots Sand Dune

    155

    riders

    1. Château de la Bonde – Eglise de Milly La Forêt loop from Bourron-Marlotte - Grez

    129km

    05:29

    790m

    790m

    Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

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    Hard

    5

    riders

    2. Château de Fleury-en-Bière – Chateau Fleury en Bière loop from Yerres

    109km

    04:24

    550m

    550m

    Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

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    Moderate

    Tips

    July 25, 2022

    The sand dunes of Béorlots are accessible by a paved road and constitute a unique testimony to the geological phenomenon which occurred in the forest of Fontainebleau at the end of the tertiary era thirty-four million years ago. At this time took place the last marine invasion of the Paris Basin, including the forest of Fontainebleau. As the sea retreated, it left behind a thick mantle of silica-rich sand. Then in the Quaternary were formed the famous sandstone chaos of the massif, and these dunes due to wind phenomena.
    Yet these dunes are in danger. They were overgrown with tall pines. They were uprooted in 2001. But the pines, which grow easily in the open, are gradually coming back.
    It is estimated that these quaternary dune fields, which appear here and there in the national forest, cover between 15 to 25% of the Massif de Fontainebleau.

    Translated by Google •

      August 22, 2022

      Surprising to see this dune in the middle of the forest of Fontainebleau

      Translated by Google •

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        Details

        Informations

        Elevation 160 m

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        Wednesday 19 November

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        Max wind speed: 20.0 km/h

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        Location: Ile-de-France, France

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