Oval or spoon-shaped hills that form in groups beneath an ice sheet glacier and indicate the direction of movement are:

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Drumlins are oval or spoon-shaped hills formed by the movement of ice sheets over the landscape. They are often found in groups and indicate the direction of glacier movement. Arêtes are sharp ridges formed by the carving of glaciers, kames are hills formed from sediment deposited by melting glaciers, and eskers are ridges of sediment deposited by streams flowing beneath melting glaciers.

Oval or Spoon-Shaped Hills That Form in Groups Beneath an Ice