A la recherche du secret de Chastel Marlhac

You'll have to follow this trail to discover Chastel's secret. A dozen kilometers of walking, a dozen stops, your senses on the alert for the slightest clue.
You'll discover what your eyes have been hiding, and set off on a 350-million-year journey into the Earth's memories.
This loop is scheduled to last just one day. If you wish, you can meet the locals and talk to them about your quest, or even take a short break in Saignes to refuel your body and mind...
Good luck to you!