- China Has Started Digging a Mysterious 10,000-Meter Deep Hole https://www.sciencealert.com/china-has-started-digging-a-mysterious-10000-meter-deep-hole 47 comments aliens
Linked pages
- Kola Superdeep Borehole - Wikipedia https://en.wikipedia.org/wiki/Kola_Superdeep_Borehole 206 comments
- Welcome to The Deepest Hole on The Entire Planet : ScienceAlert https://www.sciencealert.com/welcome-to-the-deepest-hole-on-the-entire-planet 18 comments
- Ask Smithsonian: What's the Deepest Hole Ever Dug? | At the Smithsonian| Smithsonian Magazine http://www.smithsonianmag.com/smithsonian-institution/ask-smithsonian-whats-deepest-hole-ever-dug-180954349/ 9 comments
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