Gunung Guntur, the Thunder Volcano, Garut Regency, Indonesia

Gunung Guntur from the south looking north. Most recent lava flow clearly visible. Note the lava flow coulees on the flank to the right of center. Image courtesy Wikimedia Commons

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Beauty or Beast? GUNUNG GALUNGGUNG, Indonesia

The crater of Galunggung volcano steams on February 5, 1983, a month after the end of the 1982-83 eruption. Vigorous steam clouds issue from a late-stage cinder cone formed in the center of the crater and from the margins of the interior crater wall. A lake that had begun forming in the crater at the time of this photo eventually grew to entirely cover the cinder cone. (© Don Peterson, 1983, USGS)