Outside regulated periods, or with a reservation at one of the accommodations, park in the car park at the foot of the dam.
(S/E) From the car park, head west until you reach the sign indicating several directions.
(1) Leave the GR®10 and GRP® trails. Take the Carlit ponds trail opposite, which climbs westwards. After a little over 100 m of elevation gain, for about 1.5 km, you will reach an intersection.
(2) Leave the Estany del Viver on your right. Turn left towards Carlit. The trail passes between the Estany Sec and the Estany de la Comassa. Climb slightly, behind you: superb views of the Estany Llat with the surrounding peaks. Continue along the ridge, with Carlit as your guide, and join a footbridge near the Estany de Vallell.
(3) Cross the footbridge and turn left, heading west towards Carlit. There are superb views of Estany Long on your left. Continue until you reach the junction with the Puig Carlit climb.
(4) Below is the Estany de Sobirans. Turn right, heading east, to continue along the Carlit lakes trail. Pass the Estany Sobirans and follow the Trebens lake before taking a footbridge.
(5) Go around the Estany d'en Gombau on the left. A few metres further on, there are magnificent views of the Estany del Castellar below on the left. Follow the yellow trail and, further on, cross a footbridge before reaching an intersection.
(6) Head south-east towards Les Bouillouses and walk along the right-hand side of the Estany de les Dugues. Start descending along a stream until you reach a flat area with two footbridges. Go around the Estany del Viver on the right before returning to the starting point.
(2) Retrace your steps in the opposite direction to return to the Bouillouses car park (S/E).
