Some cool volcano images:
Manam Volcano, Papua New Guinea

Image by NASA Goddard Photo and Video
NASA image acquired June 16, 2010.
Papua New Guinea’s Manam Volcano released a thin, faint plume on June 16, 2010, as clouds clustered at the volcano’s summit. The Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite took this picture the same day. Rivulets of brown rock interrupt the carpet of green vegetation on the volcano’s slopes. Opaque white clouds partially obscure the satellite’s view of Manam. The clouds may result from water vapor from the volcano, but may also have formed independent of volcanic activity. The volcanic plume appears as a thin, blue-gray veil extending toward the northwest over the Bismarck Sea.
Located 13 kilometers (8 miles) off the coast of mainland Papua New Guinea, Manam forms an island 10 kilometers (6 miles) wide. It is a stratovolcano. The volcano has two summit craters, and although both are active, most historical eruptions have arisen from the southern crater.
NASA Earth Observatory image created by Jesse Allen, using EO-1 ALI data provided courtesy of the NASA EO-1 team. Caption by Michon Scott.
Instrument: EO-1 - ALI
To view the full image go to: earthobservatory.nasa.gov/NaturalHazards/view.php?id=4430...
NASA Goddard Space Flight Center is home to the nation's largest organization of combined scientists, engineers and technologists that build spacecraft, instruments and new technology to study the Earth, the sun, our solar system, and the universe.
Soufriere Hills Volcano, Montserrat Island (NASA, International Space Station Science, 10/11/09)

Image by NASA's Marshall Space Flight Center
Editor's Note Great volcano image! We don't have high-rez images or a full write-up on this one yet, but it's too good not to share. For reference, Montserrat is a British overseas territory in the Leeward Islands, part of the Lesser Antilles island chain in the Caribbean Sea.
This picture of the active Soufriere Hills volcano on Montserrat Island was photographed on Oct. 11, 2009 by the Expedition 21 crew members onboard the International Space Station.
Image credit: NASA
More about the Crew Earth Observation experiment aboard the International Space Station:
www.nasa.gov/mission_pages/station/science/experiments/CE...
More about space station science:
www.nasa.gov/mission_pages/station/science/index.html
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The Forest on the Mega Volcano

Image by Stuck in Customs
I would guess about 50% of people know this, and I should not take it for granted that everyone does. But Yellowstone sits on top of a giant caldera, and it's due to go off any time (at least, geologically due!) If you look at a map of Yellowstone from above, you can see the clear outline of the caldera. When the mega-volcano strikes, it'll be a doozy!
The rest of this entry is here. There's also a review of the new Nikon 200-400mm lens and an interview at Trip Atlas! Full day!