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Mine Subsidence in Ohio

Diary of an Abandoned Underground
Mine Subsidence Remediation:
Jackson County State Route 32

Exposed Voids

What you're seeing is a series of voids with the tops of the voids (mine tunnels) removed. These voids were found in the westbound lanes about 200 feet east of Kisor Road.  The black mounds that remain are the pillars between the mine tunnels.   Each pillar is about 6 feet high and 8 feet wide.  It's about 22 feet between pillars.  The spaces between the pillars are mine tunnels.