Hōlei Sea Arch, Hawaii's 550-year-old lava formation collapses in Volcanoes National Park
The iconic sea arch formed from ancient lava rock at the base of cliffs within Volcanoes National Park has collapsed following structural failure last weekend.
Volcanoes National Park on Hawaii's Big Island lost one of its most recognizable landmarks this past week as Hōlei Sea Arch, a natural formation dating back approximately 550 years, crumbled into the ocean.
The structure was composed of lava rock that had protruded from rocky cliffs overlooking the sea. Monitoring data indicates the collapse occurred sometime during the weekend preceding Tuesday's report.
No casualties were reported in connection with the event, and no specific damage to nearby infrastructure or visitor facilities has been documented by authorities.
Hōlei Sea Arch is a geological feature formed over centuries of volcanic activity on Kīlauea. Its sudden failure represents a significant change to the park's landscape.
The collapse highlights the ongoing dynamic nature of Hawaii's coastal geology, where ancient lava formations can be subject to erosion and structural instability.
While the event has drawn attention due to the arch's historical significance as a 550-year-old landmark, no tectonic causes or eruption forecasts have been issued in relation to this specific collapse.
Volcanoes National Park remains open for visitors, though access points near the site may be subject to standard safety protocols.
At a glance
- Hōlei Sea Arch is a lava rock formation approximately 550 years old located in Volcanoes National Park.
- The structure collapsed sometime last weekend following structural failure.
- No casualties or confirmed damage have been reported by authorities.