A bit of an infamous part of the TA .  Gravel track, up a beautiful valley to begin with, then a  long and winding jeep road to the top. Probably cycled 3/4 of it. The downhill the other side was a disappointment + usually effort going up is rewarded by a great descent, but this track is often chewed up by erosion and motorbikes , too loose given the gradient  to cycle down at times , so it’s on and off the bike too much. Better than the busy road I guess, but not a fun ride. Jane found a gopro by the track and we managed to find the owner and post it to him later !