The spooky noises are undoubtably sheep. They sometimes cough .... sounds just like a person. Very frightening until you get used to it.
Not at the top, no. Sheepies lower down only.
Probably foxy or snake, or even the famous black grouse they have up there.
There is a very tame resident fox on the lower half of the hill. Can get really close up to it. Often seen sniffin' around the top car park looking for tit bits of dropped grub.
There have been stories bandered about regarding a ghost too!
All good for tourism I suppose.