Disko Island is a large island in Baffin Bay, off the west coast of Greenland. It has an area of 8,578 km2 , making it the second largest island of Greenland (after the main island of Greenland) and one of the 100 largest islands in the World. The name Qeqertarsuaq means The Large Island (from Qeqertaq = island). The island is separated from Nuussuaq Peninsula in the northeast by the Sullorsuaq Strait. To the south of the island lies Disko Bay, an inlet bay of Baffin Island.
Mineral deposits, fossil finds and geological formations have added to the interest in the area. One of the interesting geological features is the native iron found at the island. A 22t lump of a mixture of iron and iron carbide has been found. There are only few places on earth where native iron can be found which is not of meteoric origin. There are numerous hot springs on the island. The microscopic animal Limnognathia, the only known member of its phylum, was discovered in these springs.