Hawaii Volcanoes National Park features several active and dormant volcanoes, including Kilauea volcano which last erupted in 1954. Mauna Loa is the largest volcano in the world and covers over half of the Big Island of Hawaii. Other notable features include Waipo Valley Lookout, Molokini Crater, Holei Sea Arch, and numerous scoria cones. The park also protects many unique Hawaiian plants and animals, such as the endangered Hawaiian monk seal and Hawaiian hoary bat.