The Hawaiian name for Diamond Head is Le'ahi. It is a tuff cone (consolidated volcanic ash) crater that was created 300,000 years ago during a single volcanic eruption that spewed ash into the air.

HONOLULU (KHON2) — The Honolulu Fire Department responded to a 911 call just before 2:45 p.m. on March 30 reporting a sick hiker on the Diamond Head Crater Trail.