
The clump of boulders south of Gettysburg known as Devil’s Den went from just being a bizarre geological feature to a key piece of battlefield terrain on July 2, 1863. ((John Van Decker/Alamy Stock Photo)
The clump of boulders south of Gettysburg known as Devil’s Den went from just being a bizarre geological feature to a key piece of battlefield terrain on July 2, 1863. ((John Van Decker/Alamy Stock Photo)