The Blue Ridge Fault is a thrust fault that can be seen by walking off the highway into the woods "on the west-facing slope of Stewart Knob".  The strike of the fault runs northeast-southwest with a "low-angle decollement".  The fault thrusts metamorphic rocks of Neoproterozoic to Cambrain age onto the sedimentary footwall rocks of the Valley and Ridge (Shady Dolomite and Waynesboro Formation).  Stop 13 of Carter et al.