Mankind has long been fascinated by achieving new heights. It’s literally a cliche statement that we’ll make. We look to the stars, we seek to rise above, we jump hurdles. But it’s worth noting there are plenty of things to find when we look down deep down. There are some remarkably deep places on Earth that plumb the depths of the world around us.
This is an encore of one of our previous lists, as presented by our YouTube host Simon Whistler. Read the full list!