description Kaau Crater Overview
A phreatomagmatic tuff cone in Oahu's Koʻolau Range, Hawaii, whose crater floor holds a small freshwater lake fed by rainwater seepage.
insights Ranking position
Kaau Crater ranks #38 of 118 in the Tuff Cone ranking, behind Budj Bim (Mount Eccles), ahead of Roca Redonda.
help Kaau Crater FAQ
Where is the Kaau Crater located?
Kaau Crater is located in the Koʻolau Range on the island of Oahu, Hawaii. It is a prominent geological feature nestled within the island's lush, mountainous interior.
What type of geological feature is Kaau Crater?
It is classified as a phreatomagmatic tuff cone. This means it was formed by explosive volcanic interactions between rising magma and shallow groundwater or surface water.
What unique body of water exists inside Kaau Crater?
The crater's floor holds a small freshwater lake. Unlike many volcanic craters, this lake is sustained entirely by rainwater seepage rather than being connected to the ocean.
Can you hike to Kaau Crater?
Yes, Kaau Crater is a popular but challenging hiking destination on the island of Oahu. Hikers often trek through heavy mud and alongside waterfalls to reach the summit and view its freshwater lake.
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