the cirque d'estaubé is a cirque in the central pyrenees in the pyrenees national park, forming the frontier between france and spain. the cirque lies 4 km to the east of its better known neighbour, the cirque de gavarnie, which is accessible via the "hourquette d'alans" (2,430 m); the marboré valley is reached via the "brèche de tuquerouye" ("tuca arroja") (2,666 m), where there is a small caf hut.