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View over Lava field in Sullivan Bay towards Bartolome Island, Santiago (James) Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Waves crashing on volcanic stone beach and sea stacks of Ilheus da Rib and Ribeira da Janela at sunrise, Madeira island, Portugal, Atlantic, Europe

The remains of old water boats at Deception Island, an active volcano which last erupted in 1969, Antarctica, Polar Regions

A view of Candlemas Island, an uninhabited volcanic Island in the South Sandwich Islands, South Atlantic, Polar Regions

A view of Lucifer Hill on Candlemas Island, an uninhabited volcanic Island in the South Sandwich Islands, South Atlantic, Polar Regions

A view of Leskov Island, a volcanic island in the South Sandwich Islands, South Atlantic, Polar Regions

Lovely Mahoro Island beach with Masare and Karangetang volcano beyond, Mahoro, Siau, Sangihe Archipelago, North Sulawesi, Indonesia, Southeast Asia, Asia

Volcanic landscape view on the far away Taranaki Volcano, viewed from Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Red sunrise on Mount Tongariro with volcanic plain in front, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Mount Ngauruhoe during sunrise and sunsrise on Mount Tongariro, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Morning light on the rugged volcanic slopes and the vast countryside of New Zealand Tongariro Crossing, North Island, New Zealand, Pacific

Red Crater and Mount Ngauruhoe in Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Emerald Lakes at sunrise, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

View along the slope and hiking trail up towards the Red Crater Volcano, on Tongariro Alpine Crossing, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Shore of the Emerald Lake, natural vibrant colour gradient with view on the Red Crater Volcano of Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Bartolome Island with Pinnacle Rock, a volcanic plug, to the right, the location featured in the 2003 film Master and Commander, Galapagos islands, UNESCO World Heritage Site, Ecuador, South America

Layers of lava flows and tuff from the dormant volcano on Isla Tortuga, Baja California, Sea of Cortez, Mexico, North America

Galapagos Land Iguana (Conolophus subcristatus), large lizard can can grow to five feet long and live for 60 years, South Plaza island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Huge waves breaking on the beach at Ascension Island in the Tropical Atlantic Ocean, South Atlantic Ocean

Huge waves breaking on the beach at Ascension Island in the Tropical Atlantic Ocean, South Atlantic Ocean

Furnas Valley, a site of bubbling hot springs and fumaroles on the Azorean capital island of Sao Miguel, Azores, Portugal, Europe

Elevated view natural volcanic rock pools near Aquarium of Madeira (Aquario da Madeira) and Cachalote restaurant, Porto Moniz, Madeira, Portugal, Atlantic, Europe

Bartolome Island with Pinnacle Rock, a volcanic plug, to the right, a location in the 2003 film Master and Commander, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Pinnacle Rock on Bartolome Island in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Volcanic rock souvenirs, Lipari Island, Aeolian Islands, UNESCO World Heritage Site, Sicily, Italy, Mediterranean, Europe

Lake in the Furna do Enxofre, volcanic cave, Caldeira, Graciosa Natural Park, Graciosa Island, Azores, Portugal, Atlantic, Europe

The surfers' paradise and volcanic black sand beach at Piha, showing Lion Rock, a monolith housing many Maori carvings, Auckland area, North Island, New Zealand, Pacific

People walking on Gran Cratere rim, Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, Sicily, Italy, Mediterranean, Europe

Panoramic view of Mount Taraniki, snowy volcano summit with a blue sky and forest in the evening, North Island, New Zealand, Pacific

Close up evening view of Mount Taraniki, snowy volcano summit with a blue sky and forest, North Island, New Zealand, Pacific

Walls of Tongariro Volcano lit by red sunrise, volcanic plains of New Zealand, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Sunrise at the volcano slopes Red Crater, Tongariror Crossing, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Emerald Lakes at sunrise, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Emerald lake on volcano slope, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Close up of turquoise, vibrant Emerald Lake with steaming volcano, Tongariro Crossing, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Close up of turquoise, vibrant Emerald Lake with steaming volcano on Tongariro Crossing, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Steam of the volcano on ashes and arid landscapes, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Road across a volcanic crater, with small buildings in the distance, inland on the island of Sao Vicente, Republic of Cape Verde Islands, Atlantic, Africa

Wind-surfer off Playa de La Barca, Costa Calma, on the volcanic island of Fuerteventura, Canary Islands, Spain, Atlantic, Europe

Pinnacle Rock, a volcanic plug on Bartolome Island, one of the most spectacular features of the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

A black-banded sea krait, Laticauda semifasciata, swims over beautiful corals off the remote island of Manuk in the Banda Sea, Indonesia. This volcanic island is known as the island of the snakes.

The peak of Concepcion volcano and a black sand beach on Ometepe Island, Lake Nicaragua, Nicaragua, Central America

View of massive die-off of black triggerfish on the beach on Ascension Island in the southern tropical Atlantic Ocean, South Atlantic Ocean

Huge waves breaking on the beach at Ascension Island in the Tropical Atlantic Ocean, South Atlantic Ocean

The endemic Galapagos marine iguana (Amblyrhynchus cristatus) on Espanola Island in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Bartolome Island with Pinnacle Rock, a volcanic plug, to the right, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Guests from the Lindblad Expedition ship National Geographic Endeavour in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Lava lizard (Microlophus spp) in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Waves washing rock formation near coast of Porto Moniz and distant view of lighthouse on Ilheu Mole Island, Madeira, Portugal, Atlantic, Europe

Adult San Esteban spiny-tailed iguana (Ctenosaura conspicuosa), endemic to Isla San Esteban, Baja California, Mexico, North America

Kicker Rock, a volcanic formation near the island of San Cristobal, a popular spot for snorkelling, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Sombrero Chino (Chinese Hat) Island, just off Santiago Island in the Galapagos, UNESCO World Heritage Site, Ecuador, South America

view of Volcanoes and the Volcanic landscape with the Atlantic Ocean in the Timanfaya national park in Lanzarote in the Canary Islands, Spain

The Caldera de Gairia volcanic cone looms over this town in the central south, Tiscamanita, Fuerteventura, Canary Islands, Spain, Europe

Volcanic cinder cones in Cinque Picos caldera, seen from Serra do Cume, Terceira island, Azores, Portugal, Atlantic, Europe

Grassy fields in front of the towering slopes of Mount Taranaki, electric grid, North Island, New Zealand, Pacific

Mount Ngauruhoe during sunrise and sunsrise on Mount Tongariro, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Dry volcanic landscape on the summit plain on Tongariro Alpine Crossing, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Aerial close up of a sunlit creek surrounded by volcanic ash, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Vast arid volcanic landscape before sunrise, on high plateau of Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Shore of the Emerald Lake, natural vibrant colour gradient with view on the Red Crater Volcano of Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Turquoise and yellow green Emerald Lake in front of the Tongariro Volcano, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Emerald Lake in Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Oia village and red volcanic rocks, Oia, island of Santorini (Thira), Cyclades Islands, Greek Islands, Greece, Europe

Haleakala National Park, volcanic landscape, Maui Island, Hawaii, United States of America, North America

Haleakala National Park, volcanic landscape, Maui Island, Hawaii, United States of America, North America

Layers of lava flows and tuff from the dormant volcano on Isla Tortuga, Baja California, Sea of Cortez, Mexico, North America

View of Wideawake Airfield on Ascension Island in the southern tropical Atlantic Ocean, South Atlantic Ocean

View of the old barracks atop Green Mountain on Ascension Island in the southern tropical Atlantic Ocean, South Atlantic Ocean

Huge waves breaking on the beach at Ascension Island in the Tropical Atlantic Ocean, South Atlantic Ocean

The endemic Galapagos marine iguana (Amblyrhynchus cristatus) on Espanola Island in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

The endemic Galapagos marine iguana (Amblyrhynchus cristatus) on Espanola Island in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Adult rockhopper penguins (Eudyptes chrysocome chrysocome) at breeding and molting colony on New Island, Falkland Islands

Volcanic tunnel, Caldeira, Graciosa Natural Park, Graciosa Island, Azores, Portugal, Atlantic, Europe

Tourists visiting Lava field in Sullivan Bay, Santiago (James) Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

The remains of an old tractor at Deception Island, an active volcano which last erupted in 1969, Antarctica, Polar Regions

Panoramic view, crater of Blue Lake and Tongariro Volcano at sunrise, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Wide angle view of an Emerald Lake in front of Red Crater Volcano in the Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

The dramatic black beach of Playa Pozo Negro on the volcanic island of Fuerteventura, Canary Islands, Spain, Atlantic, Europe