Mānana Island & Makapu'u Beach, O'ahu |
Mānana
Island (67 acres, 200 feet high), Waimānalo, Oʻahu. Part of the Hawaiʻi State Seabird Sanctuary. Tuff cone built around two vents, each marked by a crater. Tuff forms when hot magma encounters seawater and the explosion caused by the rapidly expanding steam blows the magma apart, forming a spray of ash. The ash quickly cements to form a firm rock called tuff. Also known as Rabbit Island. Lit., buoyant.
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