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!
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Tagged under: excavation,deepest hole,Kola Superdeep Borehole,engineering,geology,planetary science,crust,mantle,drilling,Russia,science,SciShow,hank green,Sreekanth Reddy,Asphesteros Felleye,Houston Lucas,scishow,sci show,The Deepest Hole World,And What We've Learned From It
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