The weather on this day started out quite pleasant for riders, Dan, Andy, Gary, son Karl, Paul & me with the goal of riding the Newberry Crater Rim Trail. But as time passed storm clouds were accumulating. By the time we arrived at the trailhead (others riding, me walking- hiking the steep gravel road) dark clouds had begun to move in closer. I started down the trail with the group, but came to realize that it was beyond my mtn biking abilities. At the 'Y' junction I informed the group I would turn back accompanied by Paul so as not to hold back the rest of the group given the brewing storm. Paul & I ended up going to Paulina Peak on the gravel road (Paul biking, me hiking with bike). When we headed back to the start, the thunderstorm was beginning in full-force. Arrived at the parking lot wet & cold, but quite exhilerated!