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Abstract
Frost phenomena occur in thin layers of weathered material covering the Ordovician and Silurian sedimentary rocks om the islands of Öland and Gotland in the Baltic. Stone pits, sorted nets, and earth hummocks from flat areas of the islands have been described earlier (Hesselman 1908 and 1915, Sterner 1926, and Rydquist 1960).
The present paper shows an example of elongated polygons and sorted stripes in gentle slopes on the northwestern coast of Gotland. They are considered mainly as frost phenomena.