Exploratour - Volcanoes of the Solar System
This is a picture of a geologist examining the eruptive history of a volcano from it's surroundings.
Click on image for full size
Image from: U.S. Geological Survey, photo by Robert McGimsey
Click on image for full size
Image from: U.S. Geological Survey, photo by Robert McGimsey
The Earth is covered with the remains of ancient lava flows. This geologist is studying the ground near a volcano.
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