Hanauma Bay


Hanauma Bay is a tuff cone in Honolulu, Hawaii. It sits near another volcano called Koko Crater.

Hanauma Bay
Hanauma Bay.JPG
Aerial view of Hanauma Bay
LocationHawaii, United States
Mountain typeTuff cone
Last eruption32,000 years ago

It was created 32,000 years ago[1] as a vent of the Koʻolau Volcano. It is a popular tourist attraction due to the beach in its crater and at one point had 3 million visitors a year. The bay holds many types of marine wildlife.

The origin of the name “Hanauma” is not well known. The “hana” part means “bay” while the meaning behind “uma” is debated.


  1. "geology, Official Web Site for The City and County of Honolulu". web.archive.org. 2012-04-01. Retrieved 2020-08-06.