About a 10 mile climb up dirt/fire roads get you to the top. From there its all down hill on sweat single track. Mostly dirt trail with roots and rocks. Some parts of the trail get very close to high cliffs. Also there are a couple rocky sections that are difficult to stay on the bike but a very nice downhill.
How to get there:
Hwy 410 east from Enumclaw past Chinook Pass. Turn right onto Old River Road crossing the Naches river. Make a right after the bridge. Take hairpin left up FS road 1706. 1706 eventually turns into FS 1600. Just keep going up till your on top.
Brutal ride if you do the climb on your bike. If you shuttle the ride leave a car at the halfway po