I'm intrigued by the stories surrounding the so-called "Russian Woodpecker", a "sharp, repetitive tapping noise" that disrupted communications signals worldwide between 1976-1989. It came from huge antenna arrays located near Chernobyl & in eastern Siberia en.wikipedia.org/wiki/Duga_radar
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Here's some more images of the Duga-1 array within the Chernobyl Exclusion Zone commons.wikimedia.org/wiki/Category:
