Starting point on the D28, near Hédival Farm, situated 2 km from Puttigny. Parking is available at the side of the stretch of road leading to the farm.
The area around the Gros Max site is dangerous and finding your way there is not always easy. Follow the instructions in this guide carefully; a GPS or the Visorando app is recommended.
(S/E) With your back to the farm, take the path directly opposite and follow it for about 1 km. At the Fork in the road, take the path on your left, at the edge of the forest.
(1) After 300 m, directly opposite a railway sleeper lying in a field, take the path on the right which leads into the forest. Keep heading south-east for about 300 m.
(2) This is the tricky bit of the route. The cannon is situated about 300 m away, almost in a straight line ahead of you, still heading south-east. At a fork in the road, take the path on your right.
(3) 30 metres further on, stay on the path to your left. Follow the track for about a hundred metres.
(4) This is where Gros Max is located.
Return to the starting point via the same route, in the opposite direction (S/E).