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The area of active surface lava has diminished over the past month in Halema`uma`u crater, at the summit of Kilauea. Today, active surface lava was limited to a small pond, about 20 meters (yards) long. The pond surface was normally covered with a stationary crust, but occasionally resurfaced. This video shows crustal foundering during a resurfacing event. A gust of wind shakes the camera at the start of the video.
Video: https://www.usgs.gov/media/videos/resurfacing-event-small-lava-pond-halemaumau