I was driving over the tops earlier and it looked proper good TM.. very American Werewolf..
Woodbury is ace for whizzing about on a rigid bike.. especially sideways over the pebbly stuff..
It can develop some very boggy obstacles over the winter but the royal marines, horses, motoXers and dog walkers do far more damage than any mountain bikes in my experience.. I’ve always found that the mud, although prolific, is quite gentle on kit compared to other places too..
As anywhere else you would benefit from a local guide up there as nothing is marked and you could bimble around for months missing all the fun stuff..