description Ulupau Head Overview
Ulupau Head is a volcanic tuff cone on the Mokapu Peninsula of Oahu, Hawaii. The formation is part of Marine Corps Base Hawaii at Kāneʻohe Bay, where the Ulupau area includes military training facilities; its exposed tuff records an eruption that occurred when magma interacted with water, producing fragmented volcanic rock. The crater rises about 208 meters above sea level.
help Ulupau Head FAQ
Where is Ulupau Head located?
Ulupau Head is on the Mokapu Peninsula of Oahu, Hawaii, beside Kāneʻohe Bay. The area is part of Marine Corps Base Hawaii.
What kind of volcanic formation is Ulupau Head?
It is a volcanic tuff cone. Tuff forms when volcanic ash and fragments are deposited and hardened, and Ulupau records an eruption involving magma and water.
How did Ulupau Head form?
The cone formed when rising magma interacted with seawater or groundwater. That interaction produced explosive fragmentation and layers of volcanic tuff.
Can visitors freely explore Ulupau Head?
Access is restricted because Ulupau is within Marine Corps Base Hawaii and the surrounding area includes military training facilities. Public viewing and access therefore depend on base rules and authorized areas.
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