The Battle of Hampton Roads was a naval battle during the American Civil War that involved a face-off between the Confederate Army ironclad, CSS Virginia and the Union Army ironclad, USS Monitor. The battle took place in a bay along the Atlantic coast, off the shores of Virginia.
An image depicting this battle was scanned by the Talosians, while they downloaded the USS Enterprise's library computer in 2254. (TOS: "The Cage")
This image appeared in the original version of "The Cage," and did not appear in the remastered version of the episode.