Boulders accessed along the Blue Ridge Parkway. There is a great guide for the many greenstone boulders in this area which can be found here: https://www.dropbox.com/scl/fi/4d9dp43dg9lzddweh1xvz/total_guidev1.7.pdf?rlkey=m9b5vchlttmm1w61y29z98xvn&e=1&dl=0