The route to the Hag's Tooth follows the same path to access the Heavenly Gates gully of Carrauntoohil (the Heavenly Gates are sometimes used as an alternative descent route to the Devil's Ladder from the summit of Carrauntoohil), and also to access the dramatic deep corrie at the base of Carrauntoohil's north-east face, known as the Eagle's Nest area. The Eagle's Nest corrie consists of three distinct levels, with the top level containing Lough Cummeenoughter, Ireland's highest lake.