Explorers Ventured Into A Dangerous 300-Year Old Russian Mine – What They Discovered Revealed Dark Secrets Of The Past…

How the mines were made

Photo source: http://i.dailymail.co.uk

Mikhail was in awe of the many things he discovered. Deep shafts that served as air vents seemed like they were dug by hand. The men who were in charge of this place had obviously put their blood, sweat, and tears in creating this mine. As he looked up, he also saw how ore had seeped through the walls of the cave, making it look like he had traveled into another world altogether.

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