Drumlins - these are mounds of glacial material, deposited by the glacier. The exact process of formation is not known. They lie parallel to the direction of the ice movement. They have a smooth elongated shape because of later ice movement over them.

How are drumlins formed?

Drumlin, oval or elongated hill believed to have been formed by the streamlined movement of glacial ice sheets across rock debris, or till. The name is derived from the Gaelic word druim (“rounded hill,” or “mound”) and first appeared in 1833.

How is a drumlin formed GCSE?

Drumlins are elongated hills of glacial deposits. ... The long axis of the drumlin indicates the direction in which the glacier was moving. The drumlin would have been deposited when the glacier became overloaded with sediment. However, glaciologists still disagree as to exactly how drumlins were formed.