I parked at Upper Creek and climbed up Chestnut to Raidercamp. View from Birthday Knob: Over to South Harper Creek Falls:Harper Creek wet foot crossing then climbed up Craig Creek Road to Sinkhole where the spring in my deraileur sprung which left my deraileur hanging low and with the chain dragging the ground. I was able to hobble out, thankfully it was mostly downhill at the point of the malfunction. On the few short uphills I got to practice my hike a bike technique Cross style.