Some perched and otherwise interesting boulders

I went running yesterday along the Wissahickon. Found what I thought would be a great site (the hill's spine had broken through the earth in multiple locations, creating overhangs and smallish rock shelters. I had brought my camera along, but in the end, all I found were a few perched boulders/niches and maybe the remains of a pile.





And is this the remant of a pile?


Today's run was much more fruitful, I found some truly interesting and strange stuff. But I didn't bring my camera along (it was to be a long run, and I was concerned about rain). So I'll try and get some pics before the weekend.