Fort Ruger was in the interior of Diamond Head. It was the first US Military reservation on Hawaii.
Some areas of Diamond Head were used to film the television show Lost.
The staircase has 74 steps.
The round-trip hike on Diamond head takes about 1.5 to 2 hours.
Who came up with the name Diamond Head? Way back during the 19th century, British sailors thought there were diamonds within the rocks. These so-called diamonds were actually calcite crystals.
Diamond Head is a volcanic tuff cone. It is about 150,000 years old.