Kildin(redirected from Ostrov (air base))
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an island in the Barents Sea, 1.5 km off the coast of the Kola Peninsula (Murmansk Oblast, RSFSR).
Kil’din is 17.6 km long and 7 km wide. The surface is a hilly plateau (altitude, to 281 m) composed of sandstones and shales and abruptly broken on the north and west. Broad terraces descend to the south and east. Tundra vegetation predominates.