Mankind is willing to go to great lengths to obtain the minerals buried deep in the Earth's crust. To fully appreciate just how much effort we've put in, you only need look at some of the immense mines we've dug up.

While not all of the holes in today's top 10 are man-made, most of them are the result of mining. There are also a number of natural holes that are, quite honestly, scary and awe-inspiring to behold. Today we'll present you with the 10 most amazing holes, both natural and man-made.