Malpais badlands volcanic landscape Montana Negra and Caldera Colorada, Parque Natural Los Volcanes, Masdache, Lanzarote, Canary islands, Spain, Atlantic, Europe

Cotopaxi National Park, a large forested area known for the active, snow-capped Cotopaxi volcano, Ecuador, South America

Cotopaxi National Park, a large forested area known for the active, snow-capped Cotopaxi Volcano, Ecuador, South America

Stress cracks in the skin of a large fallen lava bomb near Mount Lokon, an active stratovolcano, near Tomohon city, Gunung Lokon, Tomohon, North Sulawesi, Indonesia, Southeast Asia, Asia

Gran Cratere (The Large Crater), Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, north of Sicily, Italy, Mediterranean, Europe

Park ranger with AK-47 Machine gun, Volcanos National Park, Rwanda

Potato fields on small farms near Volcanos National Park, Rwanda

Potato fields on small farms near Volcanos National Park, Rwanda

Mars, Caldera Nix Olympia

large stone key on the roof of a boutique hotel, Oia, Santorini, Santorin, Cyclades, Aegean Sea, Mediterranean Sea, Greece, Europe

Aerial view of a large volcanic crater in the middle of a barren desert landscape, Argentina, volcanoes, lava field, Antofagasta, South America

Giant's Causeway, County Antrim, Ireland, Basalt Columns