The Cataclysm Which Split Oahu in Half; The Nu’uanu Slide

A little more than 1 million years ago, a cataclysm struck the island of Oahu, causing the island to split in half. As a little more than half of an entire shield volcano dramatically collapsed into the ocean, a towering megatsunami was generated. Today, the remnants of this event which is known as the Nu’uanu Slide can be widely seen on the northern section of Oahu, as it left behind several thousand foot tall steep cliffs. Thumbnail Photo Credit: Frame grab/screenshot from a video (which was filmed by U.S. Geological Survey scientist Don Swanson), (Produced by Liz Westby, Geologist, USGS Cascades Volcano Observatory), U.S. Geological Survey, Cascades Volcano Observatory, Public Domain, The relevant frame grab/screenshot from the original video was also cropped. The image was then overlayed with text, a black border was added to the text, GeologyHub logo added, and orange border overlay added. If you would like to suppo