Rock Crossing Trail #18 is split into three segments because it crosses Blue Ridge / C.C. Cragin Reservoir two times.
Segment #18B technically begins on the north arm of the lake, ascends Battleground Ridge, crossing FR123 at the pumping station, before descending to the south arm of the lake. However, most people access the trail from it's mid-point at FR123 and hike to either one arm of the lake or the other.
See also Segment #18A
See also Segment #18C
Check out the Official Route and Triplogs.
This hike is listed as One-Way.
When hiking several trails on a single "hike", log it with a generic name that describes the hike. Then link the trails traveled, check out the example.