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The endemic Galapagos marine iguana (Amblyrhynchus cristatus) with a lava lizard on top of its head, UNESCO World Heritage Site, Ecuador, South America

Great frigatebird (Fregata minor) feeding on erupting green sea turtle (Chelonia mydas) hatchlings in the Galapagos, UNESCO World Heritage Site, Ecuador, South America

Adult red-footed booby (Sula sula) in flight in the Galapagos Island Archipelago, 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

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

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

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

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

Pinnacle Rock on Bartolome 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

Lava bombs erupt from one of many vents on volcano, active for at least 2000 years, Stromboli, Aeolian Islands, UNESCO World Heritage Site, Sicily, Italy, Mediterranean, Europe

Montana Arena cone at sunset, one of a chain of volcanoes south of Corralejo, Villaverde, Fuerteventura, Canary Islands, Spain, Europe

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

View of El Teide Volcano shadow from the summit at sunrise, El Teide National Park, UNESCO World Heritage Site, Tenerife, Canary Islands, Spain, Atlantic, Europe

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

Aerial view of Caldera Colorada at sunset, Tinajo, Las Palmas, Lanzarote, Canary Islands, Spain, Atlantic, Europe

Aerial view of Caldera Colorada at sunset, Tinajo, Las Palmas, Lanzarote, Canary Islands, Spain, Atlantic, 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 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

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.

Pico Viejo, Caldeira de las Canadas, Mount Teide, Mount Teide National Park, UNESCO World Heritage Site, Tenerife, Canary Islands, Spain, Atlantic Ocean, Europe

Juvenile Galapagos hawk (Buteo galapagoensis) in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

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

El Teide National Park, UNESCO World Heritage Site, Tenerife, Canary Islands, Spain, Atlantic, Europe

The endemic Galapagos marine iguana (Amblyrhynchus cristatus) in the Galapagos Island Archipelago, 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

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

Guests from the Lindblad Expedition ship National Geographic Endeavour in the Galapagos Islands, 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

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

Atlantic Puffin (Fratercula arctica), on Skomer Island in July, a nature reserve off the coast of Pembrokeshire, Wales, United Kingdom, Europe

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

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

Steam of the volcano on ashes and arid landscapes, 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

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

Snorkeler with Galapagos sea lion (Zalophus wollebaeki) underwater in the Galapagos Island Archipelago, 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

The endemic Galapagos marine iguana (Amblyrhynchus cristatus) in the Galapagos Island Archipelago, 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

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

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

The endemic Galapagos marine iguana (Amblyrhynchus cristatus), foot detail, 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

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

Tourists photographing a wild Galapagos giant tortoise (Geochelone elephantopus) feeding on the upslope grasslands of Santa Cruz Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

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

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

Lava bombs erupt from multiple vents on volcano, active for at least 2000 years, Stromboli, Aeolian Islands, UNESCO World Heritage Site, Sicily, Italy, Mediterranean, Europe

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

Palm trees growing in volcanic landscape in the Valley of a Thousand Palms, Haria, Lanzarote, Las Palmas Province, Canary Islands, Spain, Atlantic, Europe