Black Diamond Coal Mine Professional Review and Guide
"Located on the edge of the historical town of Black Diamond, the Coal Mine trails weave and bob around the south end of Lake Sawyer, Frog Lake, and Ravensdale Creek. Mountain bikers will find a circuit of trails rambling through clearcuts, a thick forest of Douglas fir, vine and big-leaf maple, alder, thistle, spring gold, western yew, mountain ash, blackberry bramble, cedar, spruce, and more blackberries.
The turns are plentiful, the singletrack is creamy smooth, and the terrain is mild. Open year-round and relatively dry compared with Victor Falls after several days of rain, the Coal Mine trails are excellent for improving steering skills and building stamina. Trail surface: Old railroad grade, singletrack, roots, rocks, and logs."