Marc Aqueduct Circular Loop

Car park on the right-hand side of the D8 when approaching Marc from the north, just before the Church of Saint-Antoine du Montcalm.

(S/E) Follow the road southwards, turn right at the church onto the GR®10, cross the Ruisseau de Mounicou, then, at the bend in the road to the left, turn right to cross the Ruisseau de l’Artigue and head up into the village via the narrow streets or the main road. At the top, you’ll reach a terrace and continue the climb along a narrow street.

(1) The start of the steep climb. At the junction, keep left, cross a street, then turn right at the next junction and join a road. Follow it to the right, ignoring the road branching off to the left, and walk for about a hundred metres towards Les Toutous d’en Bas, then follow the path branching off to the right. A very pleasant wooded path; the ground is flat as you are walking along the aqueduct.

(2) Cross the Ruisseau d’Argansou at a bend to the right of the path, which continues along the aqueduct.

(3) Leave the GR®10. Go straight on at the junction of the paths. You’ll reach the waterfall on the Ruisseau de Bassiès (swimming prohibited).

(4) Continue along the path, which becomes tarmac, then bends to the right and begins a steep descent.

(5) At the junction with a dirt track, follow it to the left, continuing the descent via hairpin bends. Ignore the paths branching off to the left. You’ll reach the D8 at a bridge over the Ruisseau de Vicdessos.

(6) Cross the Pont de Gers, then follow the D8 with care (a quiet but narrow road) to the right until you reach the car park (S/E).