Pōhakuloa Training Area is located between Mauna Loa, Mauna Kea and the Hualālai volcanic mountains on the island of Hawaiʻi. This area is currently leased out to the U.S. Army from the Department of Land and Natural Resources.

Pōhakuloa Training Area initially was in operation during World War II as a Marine corps artillery live-fire training area. U.S. Marines from the 3rd Marine Division and the 5th Marine Division trained at Pōhakuloa Training Area to prepare for the Iwo Jima and Saipan campaigns.

Pōhakuloa Training Area close proximity to Mauna Kea Forest Reserve makes the area an important place to preserve for environmental and cultural purposes. Pōhakuloa Training Area Natural and Cultural Resources staff include more than 50 professionals dedicated to preserving and protecting endangered and threatened plants and safeguarding cultural resources at Pōhakuloa Training Area.

Source: http://www.militarybases.us/army/pohakuloa-training-area/