Hawaiʻi Volcanoes National Park is located on the island of Hawaii in the state of Hawaii, United States. The park contains two active volcanoes: Kīlauea, one of the world's most active volcanoes, and Mauna Loa, the world's most massive shield volcano.
As stated in the foundation document:
The purpose of Hawai‘i Volcanoes National Park is to protect, study, and provide access to Kīlauea and Mauna Loa, two of the world’s most active volcanoes, and perpetuate endemic Hawaiian ecosystems and the traditional Hawaiian culture connected to these landscapes.