Start and parking available at Col de Castillon.
(S/E) From the pass (in front of the reservoir), take the narrow road heading north towards Baisse de Scuvion (signposts and yellow markings).
(1) About 500m further on, a path on the left allows you to leave the road and climb up towards a reservoir and some antennas, which you should pass.
At the next fork, stay on the middle path, which continues to climb under the trees before turning south-southeast. Continue until you reach Baisse de Scuvion (signposts).
(2) Then head towards the Col de Roulabre, which allows you to bypass
mont Razet (you can follow the signs for Pierre Pointue and Col de Castillon at this point to shorten the route!
(3) At the Col de Roulabre, turn right towards Pierre Pointue, where you can admire the remains of a military fort before tackling the fairly steep and stony descent towards the Fontanelles district.
(4) Continue along this path until it joins the small road taken at the start of the walk.
(5) Follow it to return to the starting point (S/E).


Note that there is a water source at the start/finish point at the foot of the reservoir.