Svartifoss (Black Falls) waterfall, its name originating from the overhanging black basalt columns, Skaftafell National Park, southern Vatnajokull, Iceland, Polar Regions

Mount Vesuvius seen from the ruins of Pompeii, buried in the ash flow of the eruption of AD 79, Columbus basalt lava marble and brick, Pompeii, UNESCO World Heritage site, Campania, Italy, Europe

Svartifoss waterfall in the Skaftafell National Park, Iceland, Polar Regions

Svartifoss waterfall in the Skaftafell National Park, Iceland, Polar Regions

Kilauea Eruption in 2008

Kilauea Eruption 2018

Wall of columnar basalt with waterfall Bridal Veil Falls, tropical vegetation, Pakoka River, Makomako, Waikato, North Island, New Zealand, Oceania

Svartifoss Waterfall, Black Falls, River Stórilækur, basalt pillars, Skaftafell National Park, Suðurland, Southern Region, Iceland, Europe

Svartifoss Waterfall, Black Falls, River Stórilækur, basalt pillars, Skaftafell National Park, Suðurland, Southern Region, Iceland, Europe

Svartifoss, Skaftafell National Park, Sudurland, South Iceland, Iceland, Europe

Svartifoss, Skaftafell National Park, Sudurland, South Iceland, Iceland, Europe

Dettifoss Waterfall, rainbow, detail, Iceland, Europe

Spirit Falls, waterfall flows over rocky outcrop, basalt rock, time exposure, Washington, USA, North America

Waterfall in front of basalt rock, Latourell Falls, time exposure, Oregon, USA, North America

Overview of the Palouse Falls surrounded by basalt rock, a remnant of ancient glacial floods and lying on the Palouse River within the Palouse Falls State Park at sunset; Washington, United States of America

Waves splash up against the cliffs along the coast; Arnarstapi, Snaefellsnes, Iceland