Author 'Charly' (Id 160217 ) : Lake oo is a mountain lake in the Pyrenees, in Luchon, 1507m above sea level. It's a lake of 42ha and a maximum depth of 67m. It is a place frequented by fishermen, but also the hikers. The relatively easy access (1:15 for a drop of 365m) makes it a family outing busy during the summer.