there was a rail in an older issue of freeskier i got, and it circled downward and went in a tunnel under where it started, it was hugan. i forget where it was.
the double trap rail at keystone is pretty nutty, and then there is this other one at keystone thats like flat aith a lip and a little table with a lip going down to more flat. ive never seen anybody do it.
thats a sick rail. its the corkscrew at squaw i belive is what you were thinking of. it was closed when i was there, otherwise i would have hit it. haha that was a joke.