Space_lovers - How deep is 12 kilometres, comparatively? Deeper than the deepest point of the ocean - the Mariana Trench. In fact, this is the deepest hole we've ever dug into our
![4,900+ Borehole Stock Photos, Pictures & Royalty-Free Images - iStock | Kola borehole, Borehole icon, Borehole well 4,900+ Borehole Stock Photos, Pictures & Royalty-Free Images - iStock | Kola borehole, Borehole icon, Borehole well](https://media.istockphoto.com/id/1232283101/photo/building-activity-on-construction-site.jpg?s=612x612&w=0&k=20&c=C67xnCbEU1cd2_atxQ4flwkWBUD1qLJXoPK3QANkQj4=)
4,900+ Borehole Stock Photos, Pictures & Royalty-Free Images - iStock | Kola borehole, Borehole icon, Borehole well
![Drilling the Deepest Hole in The World Was Extremely Hard | by Sean Kernan | Lessons from History | Medium Drilling the Deepest Hole in The World Was Extremely Hard | by Sean Kernan | Lessons from History | Medium](https://miro.medium.com/v2/resize:fit:813/1*OUtrd_DzKx7wvhZ3Jl7KhQ.png)
Drilling the Deepest Hole in The World Was Extremely Hard | by Sean Kernan | Lessons from History | Medium
![Brian Roemmele on Twitter: "This is the cap of the Kola Superdeep Borehole. They reached 40,111 feet of depth in 1989, after nearly two decades of drilling. One of the deepest drill Brian Roemmele on Twitter: "This is the cap of the Kola Superdeep Borehole. They reached 40,111 feet of depth in 1989, after nearly two decades of drilling. One of the deepest drill](https://pbs.twimg.com/media/FEnDcU_VQAYvLHw.jpg:large)
Brian Roemmele on Twitter: "This is the cap of the Kola Superdeep Borehole. They reached 40,111 feet of depth in 1989, after nearly two decades of drilling. One of the deepest drill
![Facts Zone on Twitter: "Deepest hole ever drilled by human on earth is Kola Superdeep Borehole with depth of 12.2 km. https://t.co/ktDU6hkVHS" / Twitter Facts Zone on Twitter: "Deepest hole ever drilled by human on earth is Kola Superdeep Borehole with depth of 12.2 km. https://t.co/ktDU6hkVHS" / Twitter](https://pbs.twimg.com/media/Dd5LtucUwAAnUB5.jpg)