Most of the vegetation and birds were introduced in the late 1800s to early 1900s.
The crater is 3,520 feet in diameter with a 760-foot summit.
When the United States annexed Hawaii in 1898, harbor defense became a main responsibility.
One of the major defense forts, Fort Ruger, occupied the Diamond Head Crater.
A 580-foot tunnel was dug through the crater wall to provide easier access to the Fort.
A battery of canons was located within the crater providing complete concealment and protection from invading enemies.
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Diamond Head is now a popular tourist spot and hiking destination.
A 1.1-km hike leads to the edge of the crater’s rim.
Signs at the trailhead say that the hike takes 1.52 hours round-trip, and recommends that hikers bring water.
From the summit above the observation platform both Waikiki and the Pacific Ocean can be seen in detail.
The volcano is a symbol of the worldwide recognition of the Hawaiian Islands.
Many souvenirs from Hawaii and surf shop logos around the world bear the volcano’s distinctive silhouette.
View from Diamond Head Rim.Photo credit
Diamond Head Lighthouse.Photo credit
Diamond Head Landmark.Photo credit
Diamond Head Frontal View.Photo credit