The Bossenot Marsh

The walk starts from the car park provided for the nature trail, near the Pierre du Diable, an impressive boulder by the side of the small road linking the hamlets of Lassy and Sorcy.

Signposts are located at the very start of the walk and at both junctions (signposted in the direction of this description). The circular marsh trail, between (1) and (2), is lined with wooden posts, some of which have a fence wire attached.

(S/E) Take the path that starts to the right of the information board with the map, heading towards the start of the trail. Descend slightly.

(1) At the junction, turn right towards the nature trail, cross a meadow briefly and enter the woodland.

Take a footbridge and follow a wide circular path around the marsh, anti-clockwise, alternating between different surfaces: dirt track; wooden blocks to cross a wet area; boardwalk; grassy, damp path; dirt track; wooden beams; boardwalk; grassy path; boardwalk.

Take a footbridge and cross the lower part of the meadow.

(2) At the T-junction, head up the wide path to the left.

(1) At the junction you passed on the way there, carry straight on to reach the car park (S/E).

Unless it is the height of summer, wear shoes suitable for wet conditions, or even wellies.

The time given is the actual walking time. Feel free to spend more time observing, listening to the birds, etc.

The Bossenot Marsh is a sensitive natural area: please respect the site, do not leave any rubbish behind, and do not pick anything.

The route is relatively straightforward, but a detailed map is always useful (at the very least, the one accompanying this description).

Walk undertaken by the author on 14 July 2019.

The marsh, with its distinctive flora – including a vast reed bed – and tuff concretions in the lower reaches, is the highlight of this walk. There are several information boards.

The Pierre du Diable, near the starting car park, is a natural geological formation. It is a very large boulder left behind after the retreat of the Rhône Glacier some 10,000 years ago.