Hōlei sea arch.

Hōlei Sea Arch Collapses into Pacific at Hawaii Volcanoes Park

Hōlei Sea Arch, a roughly 90-foot landmark at Hawaiʻi Volcanoes National Park that formed about 550 years ago, has collapsed into the Pacific; officials say it was standing Sept. 23 and gone days later, though the exact timing is unknown. The arch’s collapse followed years of earthquake damage, cracking and powerful surf, and park officials are warning visitors to stay away from unstable coastal cliffs.