Multiple one and two mile loops plus additional trails across 322 and up Sawmill road to create a very challenging 10 mile ride. Trail heads are at the far end of the parking lot. All trails lead from the top of Harmony Hill down to the Brandywine Creek creek bottom, about 250 feet of drop. Follow trails until they start to climb back up; they will loop back to the top of Harmony Hill. Look for the cross trails for some variety and mileage.
Roots, some rocks (but no real rock gardens), twisties, and a few log hops. Occasional mud. Two small, but slick, stream crossings on the lower side trails. Most of the technical is beginner to intermediate, but many beginners have trouble with the vertical. Single-speed is possible, but not easy.
If you follow the creek bottom trail past where it switches back up the hill, you'll emerge at Harmony Hill Road. Cross Harmony Hill Road and you can catch a pedestrian path that connects with West Valley Nature area. Very little technical here, but some nasty climbing. Other adjacent properties to be added in the near future.
Like most trails in this area, it's a nice ride but would be much better if it was longer.