Tag Archives: iron mine

20140118. The abandoned open pit mine in Marmora, Ontario is so vast and deep that it is classified as a lake.

20140118. The abandoned open pit mine in Marmora is so vast andIn the two years since my last visit, the water level in the open pit has filled in noticeably (probably at 400 ft deep now). All the ore processing equipment, tanks and ancient excavator have been removed. The hole covers 85 acres, is 1700 feet long, 1100 feet wide and 600 feet deep.