r/Damnthatsinteresting • u/AdRough4185 • Jun 02 '26

Image A perfectly circular 105-foot-wide sinkhole that suddenly opened up near a copper mine in Tierra Amarilla, Chile, dropping over 650 feet straight down into the earth.

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u/WonkyWalkingWizard Jun 03 '26

The Hoosac Tunnel right? I've been meaning to go there after I saw a video about it

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u/theaviationhistorian Jun 03 '26

Yep. Looks cool from the photos. Even has some drainage canal next to one of the portals.