I've more or less finished the middle ropeway station area, but I've run into a problem. I've made it sort of like an island, on top of some cliffs so that I can have the players get on at A, not move in the empty middle part to make the journey seem longer, then get off here once A is blocked out by the fog behind them. The fog is set at 1500 units, and the cliffs around this 'island' go down ~1800 units from the cablecar, the idea being that they should fade into the skybox colour and it just seems like you're above a huge drop. But ingame, there doesn't seem to be any vertical fog, if I look down from where the cablecar would be, it's like being in a tube of fog with nothing at either end. Is the vertical height just a lot higher than the horizontal distance, or is there some setting I can use to get this to work? Otherwise I'll need to put a floor beneath the cliffs which is just going to drain performance more and eat up the entity limit which I'm already worried about hitting.
Looking down from the height of the carriage:
http://img185.imageshack.us/img185/6259/fog1.jpg
Without fog: