7 of the Deepest Holes Humanity Ever Dug
Earth Observatory of Singapore - At just nine inches in diameter, the Kola Superdeep Borehole is the deepest hole that humans have ever dug. It took 20 years to drill to a
The deepest hole dug in the Earth ever! - What did they find?
This Abandoned Soviet Site Is Home to The Deepest Hole on The Planet
How Deep is the Deepest Hole Ever Dug? | Everyday Einstein
This Is The World's Deepest Hole - Insh
What is the deepest anyone has dug into the earth? | Socratic
Ask Smithsonian: What's the Deepest Hole Ever Dug? | At the Smithsonian| Smithsonian Magazine
World's deepest hole dubbed 'well to HELL' plunges 40,000 feet – and is only covered by 'rusty Soviet metal lid'
RUSSIA TRIED TO DIG A HOLE THROUGH THE EARTH'S CRUST IN THE 1970'S. THET REACHED 40,318 FEET DEEP BEFORE THEY STOPPED. IT IS STILL THE DEEPEST HOLE HUMANS HAVE EVER DUG. - )
What is the Deepest Hole Ever Dug? | by Momina Naseem | Medium
Scientists drill 'world's deepest ocean hole' five MILES deep near site of Japan's Fukushima disaster
What's the deepest hole we've ever dug? – How It Works
Deepest Hole Dug By Hand - Unreal Facts for Amazing facts
The deepest holes dug by hand - BBC Future
Probing Earth's deep and ancient secrets | Pursuit by The University of Melbourne
What's the deepest we've ever dug into the Earth? | Smithsonian TweenTribune
The Deepest Hole in the World | Let's Talk Science
The deepest holes dug by hand - BBC Future
Was The 'Deepest Hole on Earth' Sealed After Finding '2 Billion Year Old Fossil'? | Snopes.com
Russia is home to the world's deepest HOLE - Russia Beyond
How deep have we drilled into the earth? - Quora
The Truth About The Deepest Hole In The World
