What does a lava-flow hazard zone map show?

Nine lava-flow hazard zones for the volcanoes on Hawai'i Island (Kilauea, Mauna Loa, Mauna Kea, Hualalai, and Kohala) are shown on the map.

Zones 1-9, 1992 lava flow hazard map The zones, ranked from 1 through 9, represent a scale of decreasing hazard as the numbers increase, based on the probability of coverage by lava flows.

The land area classified under Zone 1, the most hazardous, includes volcanic vents in the summits and rift zones of Kilauea and Mauna Loa, Hawai'i's two most active volcanoes. Zone 9, considered the least hazardous region, consists of Kohala, a volcano that has not erupted for 60,000 years.