Here are some pictures I found of an open pit diamond mine in the Russian town of Mirny, 800 km (500 miles) west of Yakutsk. It's just.. I don't know, amazing that somebody would choose to mine anything this way.
The pit is 1250 m across (4100 ft), and 525 m deep (1720 ft).
The pit is 1250 m across (4100 ft), and 525 m deep (1720 ft).
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