This rail starts as a fire-road just to throw you off, then quickly narrows to singletrack high above the American River. It alternates from narrow smooth riding to some very rocky sections along very exposed areas. In some areas the trail is less than a foot wide with rocks all over it and a drop off about a hundred feet to the river.
The trail is fairly straight so it's easy to see oncoming riders and hikers, but you'll want to control your speed. You'll continually drop along this trail all the way down to near river level before it comes out on Old Foresthill Rd and several parking areas.
Many riders will park here before starting the Clementine Loop ride, which takes them up to Culvert and back down to the Confluence parking area. It's a fun ride but not for beginners or those who don't like heights.