Map is from closing of loop, but best to park at railroad tracks and ride up Indian Springs. Ride up Indian Springs, through limestone canyon, go right on designated OHV trail. After a while you will come to switchback with FS gate across it. Go through gate on grassy/old road for about 100yrds, then cut right up hill on old mining road. This section has some hike-a-bike to gain ridge. It's not a big deal, just above treeline terrain. Have a sense of adventure, won't take long to reach ridge and rideable terrain. The descent is through non-motorized terrain on a good double track mining road to lower Whipcracker.