IllustrationSite · Asia · China
Baigong pipes (Mt Baigong, Delingha)
Tubes in Mount Baigong, 40 km from Delingha, were sold as alien pipes.
natural (geological)
Iron-rich tubes in the rock looked like plumbing to some and tree roots to geologists. Which reading needs fewer guesses?
Illustration made for The Nommo, not a photograph.
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