November 2006 - Boulder rolling in lava flow at dusk during eruption of Mount Etna volcano, Sicily, Italy.

italy mount etna sicily active volcano boulder chasm close up color image danger earth science eruption fiery flowing fluid geography geology glow haze heat horizontal land feature landform lava lava flows mist molten natural disasters night no people ominous oozing orange outdoors photography physical geography power in nature powerful ravine red slope steam violence volcanic volcanic activity volcano