レ・ユリの天然記念物・トップ6

Viltain Farm then the singletrack further west is a little paradise. Landslide (04/2025) on the way back

In the morning, the rocks show blue reflections.

This rock is located along a magnificent portion of trail. It is winding, climbing and descending the hillside, full of stones and roots.

Massive boulder now supported by brick masonry Viewpoint over the Mérantaise below

The “Petit Launay” oak (the aulnoye), remarkable for its size and the distribution of its branches, seems to date back to the 15th century. The organizers of the Universal Exhibition of 1900 in Paris wanted to transport it to the capital, which attests to the interest that this Tree already presented. Mr Grisier, mayor of Bures and owner of “Petit Launay” fortunately declined this offer. This estate, a former stronghold from the 14th century, has been better known, since 1810, under the name of "The Virgin". A statuette is still visible on the surrounding wall of the property. It is crossed by the Vaularon, a tributary of the Yvette, hence the humidity conducive to the growth of alders. This tree has been classified in the list of “venerable trees in France”.

Listed among the major geological sites since 2007, this former sandstone quarry offers a nice setting for running between rock and sand. The hue of the stone also earns it the name "Blue Rocks".

If it weren't for the planes arriving or coming from Toussus le noble, it would be paradise. You must choose your schedule carefully to limit this noise pollution as best as possible.

They line the Vossery wood hiking trail