Path in the wood of Gruson / Bouvines. It is possible to find its starting point by leaving the Bois d'Infière by the small bridge which crosses the Marque, and taking the path just opposite which enters the wood. After 50 meters on your right, you can find a hill for trials, otherwise continue straight and follow the path, regularly marked by trunks on the ground. On the first part, you ride on ivy and then after a slight hill you are on dirt. You will exit at the pastor impasse 20 meters from the house.