The places on the photos is 2000 ft (700m) deep hole in the ground.
It’s called Korkinsk Coal Mine – the deepest and largest in Europe open coal mine and second largest in the world.
Miles of rails, hundreds of electro trains and giant excavators work in this place.
That’s probably one of the biggest hand made things on the Earth.
The small dots on the picture above are giant excavators like this:
On the next picture you would see more clearly how small they seem to be in comparisson with this coal mine:
Here they are. And you see those steps? On this picture the steps of the landscape seem to be small, but look at the next photo:
This is the sample of such a step. It's taller than 7 stored building.
Those steps go down to the bottom of the mine.
And here is the bottom of the 2000ft deep man made hole in the ground.