Threat Rankings of our Nation's geologically young volcanoes

Hualālai (center) and Mauna Loa (left background), two of the four active volcanoes on the Island of Hawai‘i, are ranked as "high threat" and "very high threat" volcanoes, respectively. Kīholo Bay (left foreground) is flanked on the north (left) by a lava flow erupted from Mauna Loa in 1859 and on the south by the Ka‘ūPULEHU flow erupted from Hualālai around 1800. Photo courtesy of USDA Forest Service.