Oh wow. I grew up right by the Perkiomen trail and Spring Mountain. There used to be some wicked rope swings near there back before it was even a public trail. The county cut them all down in the mid 90's and early 2000's. Most of the trail was an old abandoned railroad. The part of the trail all your photos were taken was an old logging dirt road. One night I rode my bike down the mountain part of the trail as fast as I could and there was a down tree right near the bottom after the blind turn, and I couldn't even start to slow down, so I hit it and flew into the woods. Somehow I wasn't injured at all. My family has a house and 2 acres just outside of that photo where I grew up.