Cornwallis Island, Nunavut
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Cornwallis Island is one of the Queen Elizabeth Islands in the Qikiqtaaluk Region, Nunavut Territory of the Canadian Arctic. It lies to the west of Devon Island at and at greatest length is about 110 km. At 6,995 km² (2,701 square miles) in size, it is the 96th largest island in the world, and Canada's 21st largest island. Cornwallis Island is separated by the Wellington Channel from Devon Island, and by the Parry Channel from Somerset Island to the south. Northwest of Cornwallis Island lies Little Cornwallis Island, the biggest of a group of small islands at the north end of McDougall Sound, which separates Cornwallis Island from nearby Bathurst Island.
The airport at Resolute (Qausuittuq) on the southern coast acts as a communications hub for the central arctic islands of Nunavut. This is Canada's second most northerly community.
Cornwallis Island was discovered by Sir William Edward Parry in 1819 and named for British Royal Navy admiral Sir William Cornwallis.
Cornwallis Island is also home to microbiological colonies known as hypoliths, from their tendency to take hold under ("hypo") stones ("lith").
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