Crateri Silvestri, high angle view, Etna, UNESCO World Heritage Site, Etna, Sicily, Italy, Mediterranean, Europe

Splashes of sulphur colouring Stefanos crater ground, Nisyros Island, Dodecanese Islands, Greek Islands, Greece, Europe

Al Ula, seen from Harrate viewpoint, North West Saudi Arabia, Middle East

Detail of salt pans of Maras, Salinas de Maras, Cuzco Region, Peru, South America

Salt pans of Maras, Salinas de Maras, Cuzco Region, Peru, South America

Scenic view of hoodoos and rock formations, Sunrise Point, Bryce Canyon National Park, Utah, United States of America, North America

Barren tree and rock formations near Skyline Arch, Arches National Park, Moab, Utah, United States of America, North America

View from the Monte Urgull, San Sebastian, Bay of Biscay, province of Gipuzkoa, Basque Country, Spain, Europe

Tree detail, Sutherland moorland, Highland, Scotland, United Kingdom, Europe

High angle view of Maras salt marsh terraces, Salinas de Maras, Cuzco Region, Peru, South America

The intertidal zone of the Quantock Coast, West Somerset, contains an abundance of geology and wildlife. It is a Site of Special Scientific Interest (SSSI) and is of international geological importance.

Aerial drone view of particular ice textures formed in the Svinafellsjokull glacier following global warming, Iceland, Polar Regions

Fresh Green Ferns Growing Through A Crack Of Kalauea Lava Flow, Roping And Banding Pahoehoe, At Kalapana Gardens Subdivision, Island Of Hawaii, Hawaii, United States Of America

Dry cracked mud.

Dry cracked mud.