We can't dig to the center of the Earth, but that hasn't stopped us from trying. Whether explicit efforts to dig through the Earth's mantle or some of the world's wildest open-pit mines, humankind has done some serious digging. We explore some of the craziest manmade holes out there through both ice and land.
From: Popular Mechanics
Rakot13/CC BY-SA 3.0
Irene2005/CC BY 2.0
Staselnik/CC BY-SA 3.0
National Science Foundation/B. Gudbjartsson, IceCube Collaboration