P
PennyinCanada
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Deep underground in Poland lies something remarkable but little known outside Eastern Europe. For centuries, miners have extracted salt there, but left behind things quite startling and unique. Take a look at the most unusual salt mine in the world.
kuriositas.com/2011/08/wieliczka-salt-mine-astounding.html
kuriositas.com/2011/08/wieliczka-salt-mine-astounding.html