Drumlin Drumlin A drumlin, from the Irish word "droimnín" ("littlest ridge"), first recorded in 1833, and in the classical sense is an elongated hill in the shape of an inverted spoon or half-buried egg formed by glacial ice acting on underlying unconsolidated till or ground moraine. Drumlins occur in various shapes and sizes, including symmetrical (about the long axis), spindle, parabolic forms, together with transverse asymmetrical forms; their long axis is parallel to the direction of movement of the formative flow at the time of formation. Drumlins are typically long, less than high and between wide. Drumlins generally have a length:width
Fluvio-glacial These hills can range in size and be up to 50 m tall and 400 m wide. A kame terrace is a relatively flat surface of sediment that was deposited between the valley surface and the glacier. When kames, kame surfaces, and other fluvio-glacial landforms are combined into one landscape, it is called a kame complex or glacial karst topography. Kettle holes are typically formed when a chunk of ice that came from the glacier is buried under fluvio-glacial sediments. Once the ice melts, the sediments fall and form a depression that can later be filled with rainwater and form