Rock formations on the shale shelf at Saltwick Bay, with stormy clouds and rain showers in the distance, North Yorkshire, Yorkshire, England, United Kingdom, Europe

Red bearberry on trundra shelf above Dalton Highway north of Atigun Pass, Dietrich River valley, Brooks Range, Alaska, USA, North America

Huge ice shelf on Mikkelson Island, Antarctica, Polar Regions

Arcus cloud over the mountains of the Gerlache Strait, blue sky, Antarctic Peninsula, Antarctica, Polar Regions

Icebergs, Larsen B Ice Shelf, Weddell Sea, Antarctica, Polar Regions

Larsen B Ice Shelf, Weddell Sea, Antarctica, Polar Regions

Tabular iceberg, Larsen C Ice Shelf, Weddell Sea, Antarctica, Polar Regions

Tabular iceberg, Larsen C Ice Shelf, Weddell Sea, Antarctica, Polar Regions

Tourists at the edge of ice shelf, Skontorp Cove, Paradise Bay, Antarctica, Polar Regions

Nebraska Shelf Cloud

Nebraska Shelf Cloud

Stormy Nebraska Sunset

Severe Nebraska Storm

Dramatic storm clouds with lightning and rain over farmland; Guymon, Oklahoma, United States of America

Dramatic dark storm clouds over farmland; Guymon, Oklahoma, United States of America

Dramatic dark storm clouds over farmland; Imperial, Nebraska, United States of America

Dark storm clouds over railroad tracks in a field with rain falling in the distance; Marquis, Saskatchewan, Canada

Dramatic storm clouds with forked lightning over farmland; Guymon, Oklahoma, United States of America

Thunderstorm over the Gironde in the evening on June 8, 2017, Plassac, Gironde, France

Cold air storm at the end of the day on June 16, 2016, La Beauce, Eure et Loir, France