An American National Park located in the U.S. state of Hawaii is home to one of the world's most active volcanoes, and lets visitors explore what site?
Devastation Trail:  The paved trail allows visitors to explore the site of 1959 eruption of Kīlauea Iki crater. Hawaiʻi Volcanoes National Park: Hawaiʻ i Volcanoes National Park, established on August 1, 1916, is an American National Park located in the U.S. state of Hawaii on the island of Hawaii. Hawaiʻi Volcanoes National Park:  It encompasses two active volcanoes: Kīlauea, one of the world's most active volcanoes, and Mauna Loa, the world's most massive shield volcano.
1959 eruption of Kīlauea Iki crater