Perpetual Skislope
the hollow room writes: "How about skiing on a never ending slope? A story at New Scientist suggests that some fool is going to try to build one of these. Built like a huge tilted record player, it can spin at up to 30 km/h.
Any takers?"
The snow is being constantly refreshed by the covered area, new snow being applied, and probably smoothed. You are stupid.
What, me worry?