Dendi Caldera, Ethiopia - related image preview

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Dendi Caldera, Ethiopia - related image preview

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Dendi Caldera, Ethiopia

The approximately 4-kilometer-wide Dendi Caldera includes some of this silica-rich volcanic rock: the rim of the caldera, visible in this astronaut photograph, is mostly made of poorly consolidated ash erupted during the Tertiary Period (approximately 65–2 million years ago).


Astronaut photograph ISS016-E-19239 was acquired on December 29, 2007, with a Kodak 760C digital camera fitted with a 400 mm lens, and is provided by the ISS Crew Earth Observations experiment. The image was taken by the Expedition 16 crew and is provided by the Image Science & Analysis Laboratory, Johnson Space Center. The image in this article has been cropped and enhanced to improve contrast. Lens artifacts have been removed. The International Space Station Program supports the laboratory to help astronauts take pictures of Earth that will be of the greatest value to scientists and the public, and to make those images freely available on the Internet. Additional images taken by astronauts and cosmonauts can be viewed at the NASA/JSC Gateway to Astronaut Photography of Earth. Caption by William L. Stefanov, NASA-JSC.

Published March 31, 2008
Data acquired December 29, 2007

Source:
ISS > Digital Camera
Collection:
Astronaut Photography