They’ve been doing it in those woods for a couple of years now Martin. Everytime I’m out for a trail run, I clear them, then the next day they are back!!! I keep thinking I’ll catch them at it, but ridden the woods many times each week at all times of day and never seen them. I did wonder if they thought they were targeting the kids on motorbikes, but you couldn’t get a motorbike on some of those tracks. We’ve improved our skills immensely because of them :D., but the principle of it still hacks me off!!!
If you fancy a ride some time, drop me a mail
Simon