Statistics for occurrence #1 of “Hanging Rock” in chapter 28 of Maj. Jed. Hotchkiss, Confederate Military History, a library of Confederate States Military History: Volume 3, Virginia:

...direction of Lexington. This force turned from Buchanan toward Salem, and was ready to fall on Hunter's right flank and co-operate with Early's pursuit, on the 21st, to Big Lick, and then across to Hanging Rock , a gap in the North mountains, on the Salem and Sweet Springs turnpike. There it struck the flank of Hunter's retreat, which had been expedited by Imboden's cavalry, which had marched to the left a...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Hanging Rock (West Virginia, United States) 4 0 0 0 0 user votes
Hanging Rock (North Carolina, United States) 2 0 2 0 0 user votes
Hanging Rock (Virginia, United States) 2 0 0 0 0 user votes
Hanging Rock (Indiana, United States) 0 0 0 0 0 user votes
Hanging Rock (Kentucky, United States) 0 0 0 0 0 user votes
Hanging Rock (Kentucky, United States) 0 0 0 0 0 user votes
Hanging Rock (Kentucky, United States) 0 0 0 0 0 user votes
Hanging Rock (North Carolina, United States) 0 0 0 0 0 user votes
Hanging Rock (Ohio, United States) 0 0 0 0 0 user votes
Hanging Rock (Oregon, United States) 0 0 0 0 0 user votes
Hanging Rock (West Virginia, United States) 0 0 0 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.