The Mirna diamond mine is located in northeastern Russia. The Mirna Diamond Mine is the deepest open pit diamond mine and one of the deepest open pit mines in the world at nearly 2000 feet. It takes approximately 2 hours for an ore truck to drive from the bottom of the mine to the upper rim.
Difficult to get your head around the scale of this thing, isn't it?! I love how homeschooling teaches me, as well as my children, lots of new and exciting things!