Island, Nunavut, Canada The largest of the Queen Elizabeth Islands and lying off the northwestern coast of Greenland , it is believed to have been visited by Vikings in the 10th century AD.
It is roughly 300 mi (500 km) wide by 500 mi (800 km) long, the most rugged in the Arctic Archipelago , with towering mountains and vast ice fields. Cape Columbia is the most northerly point of Canada. Ellesmere Island National Park Reserve was established in 1986.