The top of Powerline shares a major intersection with the Government Trail which can be ridden East to Aspen. Powerline is an old school trail that is fast and straight and travels through a nice Aspen grove with sections of roots. There are few distinct intersections but the trail is well marked.
About halfway down Powerline, you'll cross under a bridge. This is Valhalla; a Downhill Only Flow Trail. Continue downhill through the Aspens until Powerline intersects with the Tom Blake Trail.