That gold rush put Johannesburg on the map, attracting thousands of ... Just southwest of Johannesburg sits the Mponeng gold mine - the deepest mine in the world. It reaches a jaw-dropping ...

Underneath the picturesque North York Moors lies a massive underground mining operation which is the only one of its kind in the world. Boulby Mine is one of just six operating mines remaining in ...

Boulby Mine was opened in the 1970s and, at the time, was the deepest mine in all of Europe. Now, it is still the deepest mine in the UK. Because of how far down it goes, it is also home to one of the ...