Hawaii's famous Hōlei Sea Arch, a 90-foot-tall (27.4m) lava rock structure that formed about 550 years ago, has collapsed into the Pacific Ocean. The collapse's exact time is not known. The arch was ...
A colossal sea arch that had long been a major landmark on Hawaii’s rugged coastline has collapsed into the Pacific Ocean more than 500 years after it was naturally formed, the local park service ...
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