Environmental & Science Education, STEM, Earth & Space Science, Earth Systems, Geology
Ed Hessler
I didn't know about this striking rock formation in the Tonto National Forest, AZ. It is referred to as China Wall, "a broken vertical wall nearly a mile long (1.6 km), and about 10 feet high (3 m) and 5 feet wide (1.5 m)."
Earth Science Picture of the Day (EPOD) includes 4 striking photograph plus a satellite photograph. And an explanation of the geology on its origin. It consists of rhyolite rock.
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