Blackhead Signpost road isn't very long and isn't named after a facial blemish. Al Brophy of the UNC Law School describes the history of the road's name this way:
Brophy provides some additional detail that was new to me:
The official signpost describing the rebellion lead by Nat Turner is a few miles distant.
A couple of points of interest. First, Nat Turner could read, and he read the Bible. The effect of excluding enslaved persons from churches, however, left him with no guidance on the application of the text which, coupled with his ecstatic visions, lead him to believe deliverance from slavery could be accomplished by killing slave owners. Second, the response of the Virginia legislature was to make illegal teaching slaves to read. Hardly a testimony to the Christian faith claimed by the elites of the commonwealth.