The Rocks of Snaggy Ridge

This is basically what was talked about in the latest of the South Mountain Speaker Series that Greg and I went to in Mont Alto last Wednesday.
Anybody seen that arrow?
It also seems that at some point in time, there was a bit of magma sitting just below the surface as there are samples of columnar volcanics...think Devil's Tower....sitting right around Carbaugh Reservoir .....I probably walked right past it and never noticed!