Park along the D4 in the hamlet of Lampy Vieux, respecting the service lanes.
GR® 7 markings (white and red)
(S/E) Take theGR® 7 to the left of the D4 (towards Saissac) on a path closed to traffic (barrier). Follow the Rigole de la Montagne to the Bassin du Lampy Neuf, created to meet additional water needs during the construction of the Canal de la Robine.
(1) Turn right to cross the retaining dyke and follow the contours of the basin northwards. Cross the Lampiot and reach a fork in the path
No more markings
(2) Leave theGR® 7 by turning left when it branches off to the south-east towards a place called Lampiot.
Cross the Lampy via a ford. Ignore two branches to the left before following the Aude-Tarn border for a few metres. At the fork, turn right.
(4) You will come to another intersection (elevation 660). Keep to the right and cross the Bengue de Martel towards the north, following the right bank of the Lampy. Join a track (elevation 681)
GR® 7 markings (white and red)
(5) Turn left and follow theGR® 7, which runs alongside the track before rejoining it below Terme de Roquecave. Leave it at a right-angle bend to stay on the GR®. Turn north-west and arrive at a new crossroads.
(6) Go straight north and then, after Cantemaraud, descend to the left via the direct path towards the Galaube road. Cross it to continue down the Sarotte slope and come out onto the D12 at Pont de Larroque.
(7) Cross the Sor and head towards the village of Arfons via the Lampy road, leaving the Fontaine des Canons path on your right (cross).
No markings
(8) At Place du Plo du Barbier, leave the GR® 7, which branches off to the right, and stay on the D12 towards Sorèze. Continue to Place du Poids Public. Turn left onto Chemin de Phalippou. At the end of the tarmac road, after crossing the Aiguebelle stream, follow it for a short while on a path that then turns westwards and climbs uphill. Ignore a fork to the left and you will come out onto the small Bastouls road.
(9) Turn left and descend this carriage road to the Planque Haute hunters' hut. (Photo)
(10) Stay on this good track, which slopes gently down through the Sarremégé Forest. Once out in the open, continue down the winding dirt track until you reach the signposted Lac des Cammazes trail at a place called La Forge.
Yellow rectangle markings
(11) Turn left, cross the Sor via a concrete bridge, then follow the widening of the stream via the dam on the opposite side and turn left at the three-way junction to climb up to the Conquet spillway.
GR® 7 markings (white and red)
(12) Then stroll along the Rigole, following the GR® 7 eastwards. After crossing the small Col de l'Alquier via a deep trench, clearly dug by hand to level the Rigole, you will come out onto the suspended plain of Le Conquet, where the aptly named Rieutort stream meanders.
(13) Here you will find a second spillway used to empty the channel when maintenance is required. Then follow the western edge of this wide basin at the edge of the steeper slopes of the valley downstream, then follow the northern slope of a hillock that borders this plain to the south. After a right-angle turn, head due south, crossing another pass via a trench that is even longer and more steep-sided than the first. Now head due east, following the twists and turns of the valleys carved into the mountain by streams. Cross two more ridges that stand out from the massif via two small passes, one through a short, shallow trench and the last at level ground. Join the D4.
(14) Walk a few metres to the right on the road to return to the starting point (S/E)