[the trees come no nearer than they were when you first took notice, but their features grow clearer, sharper: the top branches rustle, a loud and purposeful motion, and for a moment you feel something grow aware of you, the inhuman pressure immense enough to break through to even the least impressionable wills. the feeling passes as the trees grow still once more.]

[the mounds may seem to draw closer together, though the huddling does not seem overtly menacing ... if it's happening at all.]