<p>The floor of the Kilauea Volcano’s summit caldera collapsed over a number of days, USGS timelapse footage posted on July 10 shows.</p><p>The video shows the caldera collapsing over time from June 13 to July 9. The explosions causing the collapse were recorded starting in early June</a>. Credit: USGS-Hawaiian Volcano Observatory via Storyful</p><br />
