In this undated photo provided by Hawaiian Volcano Observatory, a camera's telephoto lens captures the detail of crater wall illuminated by vent glow at the summit of the Kilauea volcano in Hawaii. Scientists at the U.S. Geological Survey's Hawaiian Volcano Survey say the expanding vent of Halemaumau crater helps confirm their believe that the lava is close to the Earth's surface. AP Photo logo AP Photo 5 months ago

In this undated photo provided by Hawaiian Volcano Observatory, a camera's telephoto lens captures the detail of crater wall illuminated by vent glow at the summit of the Kilauea volcano in Hawaii. Scientists at the U.S. Geological Survey's Hawaiian Volcano Survey say the expanding vent of Halemaumau crater helps confirm their believe that the lava is close to the Earth's surface.