Lac de Bastan inférieur, Glacial lake in Hautes-Pyrénées, France.
Lake Bastan Inférieur measures 1.8 hectares in surface area and reaches 13 meters in depth at an elevation of 2141 meters in the Néouvielle massif.
The lake emerged during the last Ice Age, creating a natural cascade system with the three Bastan lakes in the Pyrenees mountain range.
The term Bastan, designating this group of lakes, represents the traditional vocabulary from the Aure Valley in the French Pyrenees region.
Visitors can reach the lake through a marked trail from Artigusse parking area at 1593 meters, following the GR 10 path through the nature reserve.
The lake waters contain brown trout populations while the surrounding slopes feature mountain pine trees and marmot colonies.
Location: Hautes-Pyrénées
Elevation above the sea: 2,141 m
Address: Lac de Bastan inférieur, 65170 Vielle-Aure, France 65170 Vielle-Aure
GPS coordinates: 42.84600,0.20800
Latest update: July 1, 2025 15:33
The lakes of Occitanie, located between the Pyrenees and Massif Central, consist of both natural and artificial water bodies. The natural lakes are mainly found at high altitudes in the Pyrenees, formed by glacial activity. The artificial lakes, created by dams, serve as water reservoirs and host water activities. This region features notable lakes such as Salagou with its red rocks, Lac d'Oô with its 300-meter waterfall, and Lac de Gaube facing Vignemale.
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