The Cirque de Tromosa (in French:Troumouse) is a glacial cirque located on the northern slope of the Pyrenees, in the Hautes-Pyrénées department. It is part of the Garonne river basin. Several peaks between 2,800 and 3,100 meters make up the cirque, which with a diameter of four kilometers is one of the largest in the mountain range: La Múnia (3,133 m.) and Pic Tromosa (geodesic vertex of 3,085 m).