searching for a movie, help who knows

hi, i am searching for a movie. very distant memory of it, want to see it again.
was thinking it is wrong turn 3 but nope.
shortly: bunch of people in the woods running from some mutants? one of the good guys know something about a watchtower in the woods and there they go and climb up.
but bad guys chase them there so they have to jump from tower to the trees?

and something was about torches there.. that there must be light all the time?

anyone remembers such a plot?