Figure no.2- Bergschrund

9.1.6. ‘U’ - shaped Valley

The glacier does not carve a new valley like a river but deepens. Glacier movement widens a preexisting valley by smoothening away the irregularities. In this process the glacier broadens the sides of the valley and form a ‘U’ - shaped valley. Such a valley is relatively straight, has a flat floor and nearly vertical sides.