Images via: (Clockwise from top left) 
“Kilauea Lava Lake” by U.S. Geological Survey, “Tourists at the volcano” by Bruce McAdam, “Red Hot Lava” by {sara-ann} (cropped from original), “Lava steam and embers” by Sheila Sund, “Lava Flows Relentlessly Forward” by Bruce McAdam (cropped from original), “Lava 2” by Steve L. Martin
