The rotation of the vortex can be seen in this picture in the sideways perspective of another steam ring. (Photo: Tom Pfeiffer)
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Active volcanoes in China: Did you know that there are at least 15 active volcanoes in China? The last eruption was from the Kunlun volcano in 1951.

Ambrym volcano photos: Ambrym (Vanuatu) is one of the most active volcanoes in the world. Its vast caldera has an amazing moonscape and several active vents that contain boiling lava lakes, most famous Marum and Benbow.