On the road to SULLY sur Loire (D 948), 800 m after the village of CHATENOY, in the direction of Sully, take the "forest stone" (unpaved) to the right at the level of the "CHENAILLES" sign. After 200m on the right you will find the Maison Forestières de Chenailles.
In the opposite direction: take the "forest stone" 200 m to the left (at the "CHENAILLES" sign after the campsite and then the same route on the unpaved road.