This is a lava fountain from the 1959 eruption of Kilauea Iki. Such lava fountains completely blocked several of the roads in the Hawaii Volcanoes National Park. he summit and rift zones have produced extensive lava flows.
Image Credit: University of Colorado
Kilauea
The basaltic shield volcano on the Island of Hawaii is among the most extensively studied volcanoes in the world. The volcano, with its summit caldera, is located on the east flank of giant Mauna Loa. Activity began with a violent explosive eruption in 1790. In the 19th and early 20th Centuries its lava lake eruptions attracted widespread attention. Nearly half of the world's known lava lake eruptions occur here.