I wonder if there is anything like that in Canada/Alberta. Every time I walk down a trail that could use some work I'm scared do anything for fear of having a bunch of Leave No Trace ninjas jump out nowhere.
I'm all for leaving things natural but when you get a dirty look for moving a rock so nobody trips on it, it makes you a little paranoid.
Actually, that shovel could be pretty handy with the LNT ninjas...