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... of the broken material (detached masses, boulders, pebbles, sand, clay, and so on) by a moving glacier. Exaration brings about the formation of glacial troughs, lake basins, sheepback rocks (roches moutonnées), glacial scarrings, and striations. In the course of destruction, the rocks are smoothed, ground, and polished.

... of glacial activity, such as sheepback rocks, and various moraine formations, such as drumlins, eskers, and moraine hills. The islands have an area of several square kilometers and elevations of only a few meters. Many hundreds of skerries occur in certain regions of a sea or lake.

... , such as boulder fields and sheepback rocks. Meadows and peat bogs abound. Bird colonies occur on the islands. The inhabitants engage in fishing and stock raising; various grasses are also grown. There is offshore drilling for petroleum. The principal town is Lerwick.