The Deepest Hole in the World, And What We've Learned From It

SciShow takes you down the deepest hole in the world -- Russia's Kola Superdeep Borehole -- explaining who dug it and why, and what we learned about Earth in the process. Don't fall!
----------
Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/artist/52/SciShow

Written by Dave Loos
----------
Looking for SciShow elsewhere on the internet?
Facebook: http://www.facebook.com/scishow
Twitter: http://www.twitter.com/scishow
Tumblr: http://scishow.tumblr.com

Thanks Tank Tumblr: http://thankstank.tumblr.com

Sources:
http://www.atlasobscura.com/places/kola-superdeep-borehole
http://www2.gi.alaska.edu/ScienceForum/ASF7/725.html
http://www.damninteresting.com/the-deepest-hole/
http://www.wirelinedrilling.com/sites/default/files/Kozlovsky%20Kola%20Deepest%20Well%20.pdf
http://www.csmonitor.com/1985/0822/drock.html
http://www.nytimes.com/1981/09/29/science/russians-plan-dramatic-expansion-of-effort-in-earth-drilling.html