Lac de Trécolpas, Lake in Saint-Martin-Vésubie, France

Lac de Trécolpas is a mountain lake situated around 2,150 meters (7,050 ft) high in the Mercantour area near Saint-Martin-Vésubie, surrounded by rocky peaks and dense forest. The clear water reflects the sky and surrounding mountains, while the lake sits in an open valley enclosed by rock and alpine vegetation.

Lac de Trécolpas lies at 2,150 m in the Mercantour massif, above the Boréon valley in the commune of Saint-Martin-Vésubie. The sources record no founding event or dated episode: the lake is a natural high-altitude water body whose documented history is limited to its position and altitude.

The hike starts from the upper Boréon parking lot and takes about four hours on a marked trail with moderate climbing. Good hiking boots, plenty of water, snacks, and a first aid kit are essential, along with checking the weather forecast before heading out.

The lake lies at 2,150 m in the Mercantour massif, above the Boréon in the commune of Saint-Martin-Vésubie. From the shore, a shallow projection of land on the left-middle of the water carries a small cluster of low grass and a few thin trees, a detail easy to miss against the open dark blue surface.