MAUNA KEA AND KOHALA
|Hazard zones for lava flows on Mauna Kea and Kohala.|
The summit and upper slopes of Mauna Kea comprise Zone 7 on the lava flow hazard map. Lava covered about 20 percent of this zone in the last 10,000 years.
Zone 8 includes the lower slopes of Mauna Kea. Most of this area has not been affected by lava flows for the past 10,000 years. The part of Hilo that lies north of the Wailuku river is within this zone.
Zone 9 consists of
Kohala, the oldest volcano on the island, which last erupted about 60,000 years
ago. Although it is impossible to know if this volcano is extinct or only
dormant, the volcanic hazard there is extremely low.