Gentlemen. I would like some advice on how to make a curved slope, or rather a road which is both arched around a corner and going downwards at the same time. Like a spiral, I guess, or something akin to the big car tunnel in Hydro. I've been trying this for a couple of hours now, with no hint of success so far. I have got a feeling it has something to do with displacements, but I just can't figure it out. Tried searching, but nothing related came up. At this point, any help at all would be appreciated.