Drumlin
A streamlined asymmetrical hill composed of till is called a drumlin.
Drumlin is an elongated or oval hill or ridge that is formed by streamlined movement of glacial ice sheets across rock debris, or underlying unconsolidated till. Drumlins are usually located in broad lowland regions, and they occur in many sizes and shapes such as spindle, symmetrical, transverse asymmetrical and parabolic forms. Most drumlins are made up of till, but they may differ in their composition. Drumlins can be found in Asia at Tiksi and Russia, and in South America at Patagonia.
