All Saints Lake (Lago Todos Santos) - from the western volcanic rock shoreline, composed of mafic magma rock (which have relatively low silica and high Fe and Mg contents) - beyond the northern lower slope of Sierra Santo Domingo (r) - to Isla Margarita - and directly beyond to both Cerro Bonechemo (r) and Cerro Techado (l) - then back along the northern shoreline of the glacial formed lake, which reaches a maximum depth of about 1,100 ft. (335 m).