I have mapped this area by walking through the forest and finding the trails as they appear. I often am off trail walking through woods just guessing where they might be. There are still many trails that need to be mapped in this county parcel, the only way to do it is with a GPS on the ground, they typically cant be seen in aerial imagery. I leave notes for future GPS mapping, so myself or others know of locations to go back to and start off from. It is a work in progress and has been going for about 4 years now.