Geologic survey marker in Dolly Sods North,

Here are a couple of pics of the survey marker in the Dolly Sods North area, located just to the creek side of the large spruce campsite area.  It is almost directly across from the campsite farthest from where Dobbin Grade Trail (heading towards Cabin Mtn) makes the almost 90 degree turn to cross the Left Fork of red creek, but the grade itself continues to the campsites.  As headed out the grade to the last site, the rock is to the left about 30 feet.  It is easy to see.
One pic of the marker itself and other of the rock it is attached to.  Not much info on it, but a good place to calibrate an altimeter.