Volcanic Crater - Mount Etna, Sicily - A Dark Rim across the Snow

The dark rim of one of Mount Etna's many volcanic craters rises through the winter snow, revealing the stark contrast of lava and ice on the volcano's slopes.

The dark rim of a volcanic crater cuts across the snow-covered slopes of Mount Etna, its shallow depression and sweeping outline clearly visible beneath the winter sky. Black volcanic material dominates the crater while streaks of white snow settle into hollows and across the surrounding terrain, emphasizing the shape of this secondary volcanic cone. Mount Etna is covered by hundreds of flank craters and adventitious cones created during eruptions away from the main summit area. INGV describes several hundred such pyroclastic cones, concentrated particularly along Etna's South, West and Northeast volcanic rifts. They form when eruptive fissures open on the volcano's flanks and volcanic material accumulates around individual vents. Some eruptions produce several neighbouring cones along the same fissure, creating distinctive chains of craters across the mountain. Together with Etna's overlapping lava fields, these features preserve a visible record of repeated eruptions and help give the Sicilian volcano its remarkably complex landscape.