The Envers des Aiguilles covers a wealth of fantastic alpine rock climbing around the Requin Hut, the Envers des Aiguilles Hut & the banks of the Mer de Glace. The guide is in English throughout & features over 250 routes ranging from 5+ to 8a; all are easily accessible from the previously mentioned huts or from the Montenvers Railway or Aiguille du Midi telepherique