Check out the map, the circles represent the area's I would be interested in. I would enter in the direction of the lines going to them. The aerial photos are good but need better resolution to say these things to be 100% sure. Can you get over lapping photos and use stereo scopes? They give you 3d vision. We used to use them in foresty and you can even estimate tree height pretty accurately. With overlapping photos and stereo scopes we could predict the furture board feet produced buy a stand of trees.