The largest protected park on Earth is Greenland‘s Northeast Greenland National Park, which is approximately 357,917 square miles (927,000 square km) or about two times the size of the state of California. It was established in 1974 and contains an estimated 40% of the worldwide population of musk ox. Other animal species that live in Northeast Greenland National Park include walruses, snowy owls, polar bears, and arctic foxes. Due to its Arctic location, the park area barely reaches above freezing temperatures in the summertime, has little sunlight, and is in extreme darkness for around four months of the year.
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