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An avalanche of falling ice on Thule Island, a volcanic island in the South Sandwich Islands, South Atlantic, Polar Regions

Ice covered Cook Island, a 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

Smoking Karangetang, an active Pacific Ring of Fire volcano, Karangetang, Siau Island, Sangihe Archipelago, Sulawesi, Indonesia, Southeast Asia, Asia

Kalea Beach sunset with palm tree, canoe and Karangetang volcano, Kalea, Siau Island, Sangihe Archipelago, North Sulawesi, Indonesia, Southeast Asia, Asia

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

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

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

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

Panoramic view, crater of Blue Lake and Tongariro Volcano at sunrise, 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 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

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

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

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

Gunung Api point, lava from the 1998 volcanic eruption on the island of Banda Neira, Moluccas, Indonesia.

Gunung Api point, lava from the 1998 volcanic eruption on the island of Banda Neira, Moluccas, Indonesia.

Gunung Api point, lava from the 1998 volcanic eruption on the island of Banda Neira, Moluccas, Indonesia.

Gunung Api point, lava from the 1998 volcanic eruption on the island of Banda Neira, Moluccas, Indonesia.

Gunung Api point, lava from the 1998 volcanic eruption on the island of Banda Neira, Moluccas, Indonesia.

View of Lake Toya, framed by autumn trees in the evening, and volcanic island in the middle of the lake, Abuta, Hokkaido, Japan, Asia

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

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

View of the old water catchment area atop Green Mountain 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

Aerial view of kitesurfers surrounded by volcanic cliffs, Sotavento beach, Jandia, Fuerteventura, Canary Islands, Spain

Waiotapu Thermal Wonderland, North Island, New Zealand. Views of steaming craters on the Waiotapu Thermal Track, New Zealand

Volcanic cone, Seongsan Ilchulbong (Sunrise Point) on Jeju Island, UNESCO World Heritage Site, South Korea, Asia

Coastal swimming pools near mountains at Porto da Cruz, Machico District, Madeira, Portugal, Atlantic, 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

Sierra Negra Volcano, Highlands of Isabela (Albemarle) Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Ice covered mountains on Thule Island, a volcanic island in the South Sandwich Islands, South Atlantic, Polar Regions

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

Sunrise above the Emerald Lakes, view from red crater, 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

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

Vast arid volcanic landscape before sunrise, on high plateau 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

Miradouro do Cerrado das Freiras viewpoint on the huge volcanic crater that is now Lagoa Azul on Sao Miguel island, Azores Islands, Portugal, Atlantic, Europe

Imerovigli village perched on red volcanic hill, island of Santorini (Thira), Cyclades, Greek Islands, Greece, Europe

View over the west coast near Mirador de Balcon, La Aldea de San Nicolas; Gran Canaria, Canary Islands, Spain, Atlantic, Europe

View over Roque Bentayga to Teide on Tenerife, Gran Canaria, Canary Islands, Spain, Atlantic, Europe

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

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

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

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

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

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

Sulphur and fumarole smoke on volcano Gran crater, Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, north of Sicily, Italy, Mediterranean, Europe

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

Rocky volcanic landscape on the Tongariro alpine Crossing,lit by the sunrise, 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

Aerial close up of a sunlit creek surrounded by volcanic ash, 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

Wailea Beach, Maui, Hawaii, Hawaiian Islands, Pacific, United States of America (U.S.A.), North America

Aerial view of volcanic landscape and Mauna Kea, 4207m, Big Island, Hawaii, United States of America, North America

Church of Santa Maria in the small town of Betancuria on the volcanic island of Fuerteventura, Canary Islands, Spain, Atlantic, Europe

Sand textures on the dramatic Dunas de Corralejo in evening light on the volcanic island of Fuerteventura, Canary Islands, Spain, Europe

Small fishing boats on Playa Ajuy 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

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

Windsurfer off El Cotillo beach on the volcanic island of Fuerteventura, Canary Islands, Spain, Atlantic, Europe

Caleta Negra (Black Bay) a popular boat trip and walk with its distinctive sedimentary and lava strata, Ajuy, Fuerteventura, Spain, Atlantic, Europe

Sunset over the volcanic islands of Santorini and Anastasi Orthodox Church at sunset, Fira, Santorini, Cyclades, Greek Islands, Greece, Europe

Sunset over the volcanic islands of Santorini and Anastasi Orthodox Church at sunset, Fira, Santorini, Cyclades, Greek Islands, Greece, Europe

Sunset over the volcanic islands of Santorini and Anastasi Orthodox Church at sunset, Fira, Santorini, Cyclades, Greek Islands, Greece, Europe

Natural pools formed by volcanic lava filled with crystal-clear sea water, Porto Moniz, Madeira island, Portugal, Atlantic, Europe

Penguins walk across the glacier on Thule Island, a volcanic island in the South Sandwich Islands, South Atlantic, Polar Regions