The Giant's Causeway is an area of 40,000 interlocking basalt columns resulting from a volcanic eruption.
Read on: Giant's Causeway
Hawaii Volcanoes National Park is an excellent example of island building through volcanic processes.
Read on: Hawaii Volcanoes
Heard and McDonald Islands
Heard Island and McDonald Islands are uninhabited, barren islands located in the Southern Ocean, with a complete absence of alien plants and animals, as well as human impact.
Read on: Heard and McDonald Islands
Hierapolis-Pamukkale was an ancient spa: the hot springs here have been used as a spa since the 2nd century BC.
Read on: Hierapolis-Pamukkale
The Isole Eolie (Aeolian Islands) consist of seven islands off the northern coast of Sicily that are known for their worth for vulcanology.
Read on: Isole Eolie
The Jeju volcanic island is an example of a large shield volcano, a lesser common type of volcano and rare in its enviromental setting.
Read on: Jeju
Macquarie Island is the only place on earth where rocks from the earth's mantle (6 km below the ocean floor) are being actively exposed above sea-level.
Read on: Macquarie Island
Pitons Management Area
The Pitons Management Area consists of two lava domes or volcanic plugs that were made a WHS because of their volcanic history and aesthetic qualities.
Read on: Pitons Management Area
Pitons of Reunion
The Pitons, cirques and remparts of Reunion Island are renowned for their visually striking landscape and remaining high numbers of endemic plant species.
Read on: Pitons of Reunion
Surtsey is a volcanic island that was formed in a volcanic eruption in the sea which reached the surface on 14 November 1963.
Read on: Surtsey
Teide National Park
Teide National Park features the visually impressive Teide-Pico Viejo volcano, the third tallest volcanic structure in the world.
Read on: Teide National Park
Ujung Kulon National Park
Ujung Kulon National Park contains the largest remaining lowland rainforest in Java and is also one of only two homes of the critically endangered Javan Rhinoceros.
Read on: Ujung Kulon National Park
Volcanoes of Kamchatka
The Volcanoes of Kamchatka are one of the most outstanding examples of the volcanic regions in the world.
Read on: Volcanoes of Kamchatka
Yellowstone National Park is located in the seismically most active area of the Rocky Mountains and shows globally unparalleled surficial geothermal activity.
Read on: Yellowstone