Borovichev E.A. Botanical excursion on the Northern Soroya. Hammerfest, 2014.

Photo N. Koroleva During the ice ages glacial erosion resulted in wide valleys, where numerous lakes occurred The Sигауa Island lies on the northernmost part o f Caledonian mountain range o f Scandes, where the Cambro-Silurian sedimentary rocks (mainly metamorphized shists) prevail. There are also areas o f Caledonian gabbro and Precambrian sandstone conglomerates on the island. General relief of the island is sharply rugged. The highest point of the island, mountain Komagaksla (659 m high), is found in the central part, while most o f the Serova doesn’t exceed 300-400 m high. Long wide valleys open directly to the Sea, and together with numerous rivers and ravines, which divide the plateau-like mountain range, add to the brokennesš of landscape. The whole territory was covered by glacier during the Pleistocene epoch. The ancient ice shield and glacial lakes and rivers dramatically transformed the island surface and resulted in glacial relief (cirques, and U-shaped valleys in mountains) and extensive moraine deposits, Outwashed marine sand blown by storm winds on the Sandfjellet mountain slope 15