Geological formation, Volcanic / thermal

Giant's Causeway
The Giant's Causeway is an area of 40,000 interlocking basalt columns resulting from a volcanic eruption.
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Hawaii Volcanoes
Hawaii Volcanoes is an excellent example of island building through volcanic processes. It is distinguished among other vulcanoes by its size and level of activity.
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Heard and McDonald Islands
Heard Island and McDonald Islands are uninhabited, barren islands located in the Southern Ocean, about two-thirds of the way from Madagascar to Antarctica, or 7718 km due south of Rajapur, Maharashtra.
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Hierapolis-Pamukkale
This entry combines the Greek/Roman heritage of Hierapolis with the natural sight Pamukkale, located in the same town.
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Isole Eolie
The Aeolian Islands (Isole Eolie) consist of seven islands off the northern coast of Sicily: Lipari, Vulcano, Salina, Stromboli, Filicudi, Alicudi and Panarea.
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Jeju
The Jeju volcanic island is an example of a large shield volcano, a lesser common type of volcano and rare in its enviromental setting.
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Lord Howe Island Group
Lord Howe Island is a small island in the Pacific Ocean 600 km (373 mi) east of the Australian mainland.
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Macquarie Island
Macquarie Island lies in the southwest corner of the Pacific Ocean, about half-way between Australia and Antarctica.
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Pitons Management Area
This site includes the two volcanic Pitons, linked by a ridge. They were made a WHS because of their volcanic history and aesthetic qualities.
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Teide National Park
Situated on the island of Tenerife, Canary Islands, Teide National Park covers 18,990 ha and features the Teide-Pico Viejo volcano.
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Ujung Kulon National Park
Ujung Kulon National Park is located at the western-most tip of Java and was declared a UNESCO World Heritage Site in 1992 for containing the largest remaining lowland rainforest in Java.
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Volcanoes of Kamchatka
The Volcanoes of Kamchatka are one of the most outstanding examples of the volcanic regions in the world.
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Yellowstone
Yellowstone National Park is located in the seismically most active area of the Rocky Mountains. This leads to the existence of 200 species of petrified plants and features like geysers (with 200-250 in number, more than all of the rest of the world combined), hot springs, mud pots and fumaroles.
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