Reckon they must be game trails. Slew of AT opportunities but I'd guess forest service does the rest?
No idea. East vs west.
Not game trails but on nat forest land. Sun Valley is yuppieville. The FS has spend a wad of our tax money building a really nice complex of forest trails, many miles of them in some of the most scenic land anywhere. Since it's my tax money, I hate to see them destroyed like what I saw last week. FWIW, some of the trails are so bad that not only do hikers have to walk beside the trails but so do horses.