Perched on the rim of KÄ«lauea Volcano’s summit caldera, the USGS Hawaiian Volcano Observatory and NPS Jaggar Museum (foreground) overlook the active lava lake within HalemaÊ»umaÊ»u Crater. The black lava flows to the left and right of the fuming vent spilled onto the crater floor in April-May 2015, when the lava lake briefly filled to overflowing. Photo taken Wednesday, July 27, 2016 courtesy of USGS/HVO