Turn off of Raccoon Mountain Trail
at the Yellow Diamond markers. This trail is marked for CCW as the main direction. Either way you decide to take this loop, you'll have a tough climb followed by a wide open downhill.
After a nice spillway you'll hit a set of old foundations, take a deep breath and sip of water because at the next marked tree, the climbing begins. That tree is marked for both left and right. Right is the Upper Bower Field trail and left is Lower (less elevation and much shorter). Take the right and push yourself up to the metal gate which you'll currently have to dismount to go around and then continue to the top. There is a marked singletrack connector at the top before heading back down. Unfortunately, there is another gate to make your way around before the descend. The descent is marked with directional arrows where needed. After the foundations, you'll find the arrowed intersection with Lower Bower where you'll want to take a right along the stone walls. You'll end up on the common connector and return to Raccoon Mountain Trail
Watch for the water bars and semi exposed rocks as you descend. Uphill riders easily earn the right of way.
If you choose the Lower Bower Connector
during the climb, you'll have a much shorter climb, but still a difficult one. Follow this CCW just as the Upper's description and enjoy. Lower Bower Connector
actually connects both sets of really cool building foundations.