Some of the trees I saw were black walnut, oak, and poplar. There was an undergrowth of pawpaw; and a ground cover of dead leaves (all year), dead wood (all year), ferns, poison ivy, strangle-thorn vines (2 types), wild mint, wild oregano, etc…
Oddly small white limestones run around the base of some tree trunks. Perhaps they were placed there by fairies or humans, or upon growing the tree pushed the ground around it up through the leaves.
Stone ruins of a Civil War fort sit atop Loudoun Heights Ridge Trail, just as they do on Maryland Heights Ridge Trail; but on Loudoun Heights the ruins are smaller and made of smaller stones. I once camped up here in the rain by myself.
Towards the north-east the path is overgrown by pawpaws. After several minutes of pruning, I was able to clear a hole through the foliage. I used finger snapping, and stick whacking on the branches.
Then the Ridge Trail is threatened by strangle-thorn thin-stem vines, and other thorns (raspberry and thick-stem thorns). Strangle-thorns of the thin-stem variety have odd shaped leaves resembling pale-green wild bean vines. The Orange Trail High End Ridge junction is here.