Technical hike to discover Lake Pormenaz. The lake is surrounded by an impressive diversity of flora and faces the majestic Fiz mountain range.Description: Take the Route du Chatelet and follow the road until you reach the Souay chalets. Take the path down to the torrent and cross over on the small footbridge. Climb up a steep path and follow the signpost to the left towards the 'Argentières'. The trail follows the Souay vale. There are some slightly difficult passages where cables are present. Arriving at the edge of the stream, the trail rises up through the grassy slopes. Once you have reached the flat, follow the path to the right towards Lake Pormenaz. Descent: along the same path or via the Moede Anterne mountain refuge hut. From the lake, follow directions for the refuge. From the refuge, follow the 4x4 trail, crossing towrads the Ayères chalets above. Then follow signs to 'Chalets du Souay' on the left and 'Chatelet.' - Fishing is permitted here.