There is a range of upland glacial landforms formed as the result of erosion. These are explored below.
Corrie – This is an armchair shaped hollow found on the side of a mountain, e.g. Helvellyn, Lake District. They typically contain a lake, known as a tarn.
The formation of a corrie
When the ice has melted a cirque, also known as a tarn or corrie lake, is formed.
A tarn, corrie lake or cirque
The video of Helvellyn below features a corrie containing a lake known as Red Tarn.
Arete – This is a narrow, knife-edge ridge separating two corries, e.g. Striding Edge, Helvellyn.
The video below shows an arete in the Swiss Alps.
Pyramidal Peaks – These are formed when three or more corries form on the side of one mountain, e.g. The Matterhorn, Switzerland or Mount Snowdon, Snowdonia National Park, Wales.
The Matterhorn, a pyramidal peak in the Alps, Switzerland.
Tarn – This is a lake found in a corrie, e.g. Red Tarn, The Lake District.