The hill is most often climbed from the north, along the Hag's Glen and then up the steep Devil's Ladder. The route has become dangerous in recent years due to loose stones and crowding. No special equipment is needed to climb the hill. Alternatively, one can walk the two other 1000m peaks in a horseshoe trip, starting from the west. The traverse from highest point to the second highest involves a light scramble.
The weather conditions on the hill are very changeable, and due to a high number of underdressed tourists attempting the peak each summer, there have been a number of deaths. A huge metal cross (about 5m) tops the peak.
There is some variety in the spelling of this mountain. It is marked on the Ordnance Survey of Ireland maps as Carrauntoohil, and may also be spelled Carrauntuohill. In the Irish language it is known as Corrán Tuathail.
Wind howled around the 200-metre high walls of the corrie where they had chosen to camp (situated between Carrauntoohill and Been Keragh) and slammed into their tents from every direction.
They had no radio, and were first made aware of the approaching storm on meeting another party descending from the peak by the shore of Lough Callee.
On voicing their intention to camp by the Eagles Nest, members of the second party assured the lads that they would probably be able to weather the storm in the shelter of the corrie.