3 ms·
Why would there be deep underground salt mines from 400 million years ago?
by sidewndr46 5y ago
Why would there be deep underground salt mines from 400 million years ago?
- bluedino 5y agohttps://project.geo.msu.edu/geogmich/mibasin.html https://project.geo.msu.edu/geogmich/mibasin.html