A drumlin is a teardrop-shaped hill that resulted from a glacier moving over loose ("unconsolidated") soil. It forms from soil under the glacier. The point of the teardrop indicates the direction in which the glacier was moving. You can see a similar thing happen when water moves over uneven sand at the beach (Not ripples in the sand, which are formed at right angles to the water's movement.)

A moraine is rubble that is pushed ahead of the glacier (technically, a terminal moraine) and left there marking the forward edge of the glacier when the glacier retreats. Other, non-terminal moraines are also seen, particlarly when the rubble scoured by the glacier from mountain walls as the glacier moves through a valley is concentrated at or near the longitudinal midline of the glacier and left behind like a track of the glacier as the glacier melts.

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