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This video tackles a tricky aspect of physical geography. In the middle of U-shaped valleys that have been carved by glaciers, we often find small hills between 2 m and 100 m tall. These hills are called drumlins. But how do they form?

To accompany this video, use ESRI's interactive web map to explore 3D drumlins in GIS.

Geography course links

GCSE • A-level • National 5 • Higher • IB • Leaving Certificate


Developed by Rob Parker and Richard Waller.

Filmed by Vratislav Karas.

Edited by Rob Parker and Vratislav Karas

Thank you to Thorbjorg (Tobba) Agustsdottir for the Icelandic lava footage.