Muddy during the winter.
the upper section of this trail follows the old tram route that was used to haul loads of rock from Table Rock. Many of those stones were used in the construction of famous buildings in Boise, and the surrounding area. Now it serves as a fun, rocky, and steep section of trail to really keep you on your toes. The trail is off camber at times and there are some sections that want to throw you off your line.
Look for rock options along the side of the trail, that can be ridden to keep things interesting. There are plenty of good, technical sections to keep your skills sharp. You can definitely climb this trail, but it's best ridden as a downhill.