“Tantalus is an extinct cinder cone in the southern Ko’olau Range on the Hawaiian Island of O’ahu. It also has a summit crater, Tantalus Crater. The cinder cone formed after the demise of Ko’olau Volcano, during a time of rejuvenated stage volcanism in southeastern O’ahu that also formed Punchbowl Crater, Diamond Head and Koko Head. [...]

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