"Half way between Loza and Turra is the Roc des Corneilles, a characteristic sharp-edged cargneule rock located 200 m above the GR5. It is unique in the fact that it is crossed by a large crescent-shaped breccia giving it the nickname ""hollow moon"". From there, you have a beautiful view of the Rateau d´Aussois. If you feel ready, you can get to it by leaving the GR and following the grassy rump north of the 2,456 m point on the IGN map. The famous Crows could very well be in fact groups of alpine choughs, a bird typical of the high reliefs, gregarious in nature and acrobatic in flight."