Was it in a natural underground cave or man-made tunnel?
2006-11-29 08:28:53 · 7 answers · asked by Edit_Cat 2 in Education & Reference ➔ Trivia
12.2Km. It was a borehole dug by the former USSR, called the Kola borehole- just to prove a point of being able to dig the deepest hole! It took nearly 20 years to dig.
2006-11-29 08:33:53 · answer #1 · answered by Tk 2 · 3⤊ 0⤋
The gold mines in South Africa are between 5 & 8 kilometers deep so I guess that's as far down as anybody is going because it needs huge refridgeration and ventilation plants to keep the atmosphere down there livable.
2006-11-29 08:31:38 · answer #2 · answered by tucksie 6 · 1⤊ 0⤋
Western Deep Level mine in Johannesburg. It's a gold mine.
2006-11-29 08:32:02 · answer #3 · answered by barry-the-aardvark 2 · 1⤊ 0⤋
I think its the Mariana Trench in the Pacific??
Its a massive hole in the sea that goes down 4 miles deeper than Mount Everest goes up.....so pretty deep I think!
2006-11-29 08:33:16 · answer #4 · answered by godlykepower 4 · 0⤊ 1⤋
All the way to the core! unfortunately the landed in a time vortex and ended up in 1789 and everyone thought they were crazy and put them in a mental hospital! I know, shocking...I was sure they'd have melted too!
2006-11-29 10:39:47 · answer #5 · answered by Hannah-4 2 · 1⤊ 1⤋
Probably under the sea somewhere.
2006-11-29 08:29:58 · answer #6 · answered by ~Grace~ 5 · 0⤊ 1⤋
bradford.
2006-11-29 08:30:37 · answer #7 · answered by KU 4 · 1⤊ 1⤋