The Overlook crater lava lake, within HalemaÊ»umaÊ»u Crater at KÄ«lauea’s summit, has been rising over the past few days, and Thursday (April 23) reached the highest point yet measured for the current summit eruption. The lava lake in the afternoon was 20 meters (66 feet) below the Overlook crater rim. Photo taken Thursday, April 23, 2015 courtesy of USGS/HVO