Karlsøya (Østfold)
Karlsøya is an island in the municipality of Sarpsborg, in Østfold county, Norway. Before 1992, Karlsøya was a part of Skjeberg municipality. The island's only connection with the mainland is a bridge that connects the island with the peninsula of Ullerøy.
59°08′47″N 11°08′22″E / 59.1463°N 11.1394°E
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