I found this site fscinating - virtual journey to Earths' core

[cornishman]

How far would you have to travel to reach the Earth's core? And what would you see along the way? Discover what lies beneath...

Well worth a visit
http://www.bbc.com/future/bespoke/story/20150306-journey-to-the-centre-of-earth/index.html

 

[brendalovescompo]

I seen that the other day on facebook. Very facinating. We have a well that was drilled 150 ft. I was amazed to see that the deepest hand dug well was 1200 ft in England. Hard to believe. hey I have smilies on phone now!