The hike (or walk) takes place on the south-eastern side of the Mont Coronat limestone massif, starting from the Mas de Lastourg campsite.
(S/E) Start in front of the road leading to the campsite and the SHEM hydroelectric station.
On the N116, cross and continue straight ahead on the service road marked "Interdit sauf riverains" (no entry except for residents) (for cars).
Immediately turn left and continue along the service road for 800 m, slightly uphill (+40 m). Pass an old renovated shepherd's hut with a very pretty garden on your right, cross a bridge over the small Ravin des Horts/Correc dels Horts river (often dry), cross a fairly large parking area (former gravel storage area for the road department?), then continue along the track (often completely overgrown with weeds). Cross a passage marked "Attention passage à gué" (caution: ford). At the end of this path, there is a road barrier, like a car park entrance or toll booth. You need to go back about 30 metres.
(1) Leave the path and head up the embankment at a 90° angle to the road, towards a small oratory. The climb is short but difficult.
(2) You will quickly reach the first terraces. Continue to the oratory. Go around the oratory and head towards a large shepherd's house, clearly visible 100 metres higher up. The climb is quite steep, through old terraces, with no signposts or path. However, the house is visible throughout the mini-climb.
(3) When you reach the house, turn left onto a path leading from this shepherd's house to the neighbouring farm of La Guardia, 700 m away. Along the path, on the right, you will find the old Jando irrigation canal (sometimes marked "Rec Nou" = "new irrigation canal" in Catalan), which is sometimes clearly visible, sometimes completely hidden by vegetation or filled with earth.
(4) Leave the canal and head towards La Guardia. The gates to the farm property are at the end of the circuit to the west.
(5) Turn back.
(4) Follow the canal again.
(3) Pass behind the shepherd's house, without turning right, and continue to follow the old canal (rather than the path shown on the map, which is completely abandoned). The canal joins the dry riverbed of the Ravin des Rocs Llisos/Torrent dels Horts (which flows into the Têt a little further down).
(6) This passage is quite difficult to cross, as the canal is broken and has probably been out of service for decades; you will need to do a little non-dangerous downclimbing over a 2-metre drop. The canal then resumes its winding course with very steep passages and counter-escarp walls over a length of 500 metres. However, this is not dangerous, even for children.
(7) The canal then joins a new river, the Ravin des Horts/Correc dels Horts. You have to retrace your steps for 30 metres. Then leave the canal and descend to the right through the undergrowth to rejoin the service road taken at the start of the hike, leaving the peak at 573 metres (IGN map elevation) on your left, the Kerlong. After crossing terraces planted with young cork oaks, join the path below, about 60 metres before the bridge over the Ravin des Horts/Correc dels Horts river, which you crossed earlier.
Back on the service road, simply follow the road in the opposite direction until you reach the campsite (S/E).