All the impassable fences were marked on the map (if you looked closely enough)!
yeah I sure it was was just nice not to have to look at it because tash had already told me.
Fair enough. It did catch a few people out but there's no easier way to mark really short sections of fence that exist for no real reason - I did try telling people at the start about being able to access both sides of the fence although one person thought I meant that you could get through into the OOB area in the school. Sigh.