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The park in Hawai'i encompasses diverse environments that range from sea level to the summit of the earth's largest volcano at 19,999 cubic miles, Mauna Loa.
HaleakalÄ National Park, a national park on the Hawaiian island of Maui, is a superb example of the Hawaiian Islands' native ecosystems.
A more conscious effort to protect Native Hawaiian cultural and natural resources has improved this gem of a historic trail.