Diamond Head State Monument is located on the island of Oahu, Hawaii. Known to locals as Le’ahi, it is visible from famous Waikiki beach and is located not far from the beach’s south-east shore. Covering almost 500 acres, it is impossible to miss, but to appreciate its magnificence and magnitude one should get up close and personal.
The remnants of a volcano, Diamond Head is such a recognizable landmark that it received historical designation in 1968 as a representative example of a geological feature called a “tuff cone.” Scientists tell us that the top of the mountain was blown off in an explosive eruption over 300,000 years ago. The soil and rock was reduced to ash and fine particulates that settled back into the cone over the millennia. Finally, around the time the Europeans arrived in the 19th century, plants and animals began making the crater their home.