I had never heard of this. It appeared randomly in my YouTube home page yesterday. A 12 kilometre deep investigative drill hole in Russia. I was staggered to learn that this equates to only 0.02% of the distance to the centre of the Earth. Fossils of single cell life were discovered at 7 km. Real mind blowing technology. I occasionally post in the Does God Exist? thread. These are the kinds of topics which make clinging on to a faith really difficult. Maybe that's what it's all about. Mankind's insatiable appetite for knowledge and learning. It's why I also enjoy trash TV like tonight's I'm A Celebrity final. We need an off switch.
That reminds me of an Arthur C Clarke short story called The Fires Within.
Just read that a similar borehole was dug in the US, but struck molten sulphur at 6 miles deep.