Fig. 10.7(b) A cirque on an OS map. Fig. 10.7(c) A cirque with a tarn lake.
Arête Irish example: The Devil’s Punchbowl, Mangerton, Co. Kerry
Description: When two cirques form back-to-back, the processes of glacial erosion will result in their back walls forming a narrow ridge called an arête (Fig. 10.8).
Description: An angular, pointed mountain peak (Fig. 10.9).
Formation: Where three or more cirques form on a mountain, the processes of glacial erosion eroding the back walls will result in the formation of a pyramid- shaped peak or horn (Fig. 10.8(a)).
Fig. 10.9(a) Carrauntoohil, Co. Kerry.
Cirque
Pyramidal peak Steep slopes
Cirques Fig. 10.8(b) An arête.
Fig. 10.8(c) Cirques and an arête on an OS map.
Fig. 10.9(b) Cirque and a pyramidal peak on an OS map.
