description Diamond Head (Lēahi) Overview
Diamond Head (Lēahi) is a prominent tuff cone located on Oahu, Hawaii. Formed during the Pleistocene epoch approximately 300,000 years ago, it represents a significant example of volcanic landform development. The site’s unique geological history and dramatic landscape make it a notable destination for hikers and visitors interested in Hawaiian geology and natural history. It is designated as a State Monument and offers panoramic views of Honolulu and the surrounding coastline.
help Diamond Head (Lēahi) FAQ
What type of volcano is Diamond Head?
Diamond Head is a volcanic tuff cone, not a traditional mountain, formed by explosive eruptions. It was created when magma interacted violently with shallow groundwater, blowing ash and rock into the air.
How old is the Diamond Head crater?
The geological formation was created during the Pleistocene epoch. It is estimated to be roughly 300,000 years old and has been dormant ever since its single explosive formation event.
How did Diamond Head get its name?
The site's Hawaiian name is Lēahi, but British sailors in the 19th century dubbed it "Diamond Head." They mistakenly believed the shiny calcite crystals in the volcanic rock were actual diamonds.
How long does it take to hike to the summit of Diamond Head?
The Diamond Head Summit Trail takes most hikers about 1.5 to 2 hours round-trip to complete. The 1.6-kilometer trail includes steep stairs and dark tunnels before reaching the historic military bunkers at the top.
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