The landscape of the Big Island of Hawaii has changed forever. Between September 23 and 27, the Hōlei Sea Arch, an imposing structure reaching 27 meters in height, collapsed entirely. This event reportedly occurred while the park was closed due to the passage of Tropical Storm Nolo.
Did you know?
Sea arches are geological formations created by the erosion of a cliff by waves, which eventually break through to create an opening. In the case of Hōlei, this was a volcanic structure formed approximately 550 years ago by lava flows.
While the final collapse was sudden, the structure had been showing signs of exhaustion for years. The volcanic rock simply could not withstand the relentless combination of seismic activity and the constant pounding of the Pacific tides.
Chronology of Hōlei's Fragility
| Year/Event | Impact on the Structure |
|---|---|
| 2018 (Kīlauea Earthquakes) | Severe damage to the surrounding cliffs. |
| January 2020 | Appearance of new cracks; observation zones were moved further back. |
| Late 2020 (Storm Darby) | Detachment of a critical part of the base. |
| September 2026 | Total Collapse during Tropical Storm Nolo. |
The United States National Park Service has issued an urgent alert for all tourists and residents. The fall of the arch serves as a stark reminder of the extreme instability of the coastal zone in this volcanic region.
Safety Recommendations:
- ⚠️ Stay away from the edges of the cliffs.
- ⚠️ Respect all safety signage within the Hawaii Volcanoes National Park.
- ⚠️ Avoid high-risk zones where walls drop vertically into the sea.
This event highlights the fragility of geological formations in the face of climate change and the persistent volcanic activity characteristic of the Pacific Ring of Fire.
Source: National Park Service