Diamond Head State Monument

This guide to Diamond Head State Monument in Honolulu opens on the morning of December 7, 1941, with a young radio operator at the crater's lighthouse relaying the first word of the attack below. From there it steps back to the volcanic eruption that shaped the crater, the Hawaiian name Leahi, and the nineteenth-century British sailors whose mistaken discovery gave the site its English name. It follows the Army's fortress project that cut the trail and tunnel you climb today.