Archive · 3 Oct 2026
Hawaii’s Holei Sea Arch Collapses After Centuries of Erosion
The Holei Sea Arch was a rock formation in Hawaii.
It formed in old lava rock.
Over time, water wore away parts of the rock.
The arch also had cracks and weaker spots.
The ocean slowly wore down one of its supporting pillars.
In 2014, the U.S. Geological Survey said the arch would eventually disappear.
Now, the arch has collapsed.
The articles do not say exactly when it happened.
The Holei Sea Arch in Hawaii has collapsed.
The arch formed in ancient lava flows.
Erosion along cracks and weaker areas helped form the arch.
Ocean waves gradually wore down the arch’s supporting pillar.
The U.S. Geological Survey said in 2014 that the arch would eventually disappear.
- Who
- The Holei Sea Arch and the U.S. Geological Survey, which had predicted its eventual disappearance.
- What
- The Holei Sea Arch collapsed.
- When
- The date of the collapse is not stated; the U.S. Geological Survey discussed its expected fate in 2014.
- Where
- Hawaii.
- Why
- Erosion wore down the rock, including the arch’s supporting pillar.
- Landmark
- Holei Sea Arch
- Location
- Hawaii
- Status
- Collapsed
- Formation
- Formed within ancient lava flows
- Erosion
- Rock eroded along cracks and weaker spots
- Prediction
- In 2014, the U.S. Geological Survey said the arch would eventually disappear