English: Pāhoehoe Lava flow on the coastal plain of Kīlauea, The Big Island of Hawai generated wildfire. The new lava is moving across the old surface, which is covered with a layer of moss about an inch thick. This moss is burning generating the smoke visible in the image. This kind of fire cannot be easily prevented or suppressed. The update that was written by USGS for the same day the image was taken - 09/04/07 says :"Lava flows advancing through vegetation are hazardous and can produce fire and methane explosions that propel chunks of lava and rock several feet into the air." The picture was taken from a helicopter.