I know plenty of threads have been posted on trail sanitisation, but hadn't seen mention of this one before. I was riding around Great Longstone the other day and the bridleway that comes down from the quarry onto the road into Rowland has been filled with black gravel. This used to be a lovely loose and rocky descent, with a few small drop-offs and sketchy bits and required a bit of thought to ride well. Now - other than a few water bars - it's just a gravel track.
The steepish climb up Black Harry Lane and over to Stoney Middleton has also been filled with gravel at some stage since I last rode it, but that is already reverting to its old self.
I've heard it said this "sanitisation" is to discourage the MXers and 4 x 4s, but it's such a temporary measure that it seems largely pointless.
Can any shed on light for the real reasons behind doing this?