Remember this post where I grumbled about the mountain? I just thought it was impossible to understand until y'all saw it with your own eyes.
So. That's the set right there, in the corner of the first image, all broken-down and ramshackle. That's where the parties happen.
The hill is man-made, over the last year or so. You see the one with four or five trucks in the frame? Imagine a whole day of that.
It's all rubbish. Really.