im guessin either the white/black gorge thats just below the ghost town itself, or its got to be in the gorge from forks to eureka. given the background id say its gotta be that upper gorge thats just below the town itself. i just cant think of anywhere else in that area that has that kind of flow.
if it is, i wonder if they ran the slide/pinch thats at the top of that gorge, it looked iffy but looked like it could go....sick job fire'n it up though!
"Don't f$&@ing eddy out, just run it! Whaddya doin??" -LMyers