FXRob - if you've just stepped off the lift go straight about 150 feet until you just pass the BBQ and at the first road hang a left on 2N10. Go down the road a few hundred feet until you hit the first right turn. This takes you between 2 buildings and on a slight uphill. Follow this a bit until you see a lake (pond, small body of water, whatever) and stay on the left side of it. You'll ride over a grassy area and at the treeline you'll see the trail. If at any point you hit a wide well driven fireroad that heads downhill you've missed the entrance.
This takes you halfway down the mountain. At one point you'll hit mid-mountain trail, the interchange of the mountain. I honestly can't remember the directions from here BUT I think it's this...
The last part of Upper Falline is a pretty steep decent that ends into Mid-Mountain. Either you can make an immediate right or take the hard right track turn ('burm' maybe, I can't remember the word) . Either way, you want to go right from where you came down. Ride this pretty flat wide trail a few hundred feet until you see a left turn. I always know it because there's a triangle shaped grey rock by the trail. Hang a left onto it and ride that all the way down. It will dump you on a service road at which you hang a left. Take the back to the base.
When you get there ask for a map, it's marked on there. Getting to the start is the only tricky part. If you like I'll scan in the map when I get home tonight, let me know.
--Taylor