Hawai'i Volcanoes
- Hawaii

photo: Janice Wei/NPS
Hawai'i Volcanoes National Park is a must-see destination for anyone interested in geology. The park is home to Kilauea, one of the world's most active volcanoes, as well as Mauna Loa, the world's largest shield volcano. Visitors can see lava flows, hike the Kilauea Iki Trail, and check out the Thurston Lava Tube, a 600-foot cave. The 2018 eruption cut off part of Crater Rim Drive, but it's still a spectacular trip to view and hike.