Chance, isn't the site you suggest for a field trip a no go area, i'm sure i saw no entry / keep out / private land etc signs up there that had just been put up recently, no biggy, just an observation mindful of a plan B if necessary. !
Edit: This is posted as a genuine question to prevent dissapointment if you go up there only to be greeted with gerroff my laand, not an attempt to start more bollox.