Souveyrols lake, perched at 1250 metres, is the smallest of the four glacial lakes in Aubrac. It has the distinction of being surrounded by a carpet of sphagnum and various aquatic plants floating on the water. The whole thing forms a soil that appears normal but in reality unstable, and one can sink into very cold water when approaching it. It is therefore strictly recommended not to approach the lakeside.
This site is known to be one of the few sites of the Siberian ligular, a very rare peat bog plant in France. This plant blooms in August, it is protected, there are several hundred around its shores.