Park in the free public car park to the south of Bière.
(S/E) Take the Chemin du Camp Celtique, then turn right onto the path running alongside the Ruisseau du Douit. You’ll come to a bridge.
(1) Turn left onto it and head up the path. You’ll reach the site’s ramparts. At the entrance to the site, turn left to walk around the stone ramparts. Make your way to the site’s exit.
(2) Go through the gate and continue along the path to quickly reach the hamlet of Launay.
(3) Turn right onto the yellow-marked PR® trail, then continue to the right at the next junction. Follow the Ruisseau du Douit and return to the bridge you crossed earlier.
(1) Cross the bridge again, then follow the same route as on the way out but in the opposite direction to return to the Bière car park (S/E).