Well, the coffin-shaped rock located on Eberhart Point at Little River Canyon is definitely real. No one seems to know exactly how or why it got there. Union and Confederate soldiers roamed the area during the Civil War and the Cherokee lived there for thousands of years before being forced away on the Trail of Tears. The 500-foot drop into the canyon is also very real. People have reported hearing strange rumblings and seeing ghost-like apparitions floating over the abyss. Maybe the phantom cavalry is not so made up, after all.
Just to be safe, if you're visiting the area and suddenly hear what sounds like horses' hooves coming at a gallop, move away from the ledge. You wouldn't want to be conscripted into riding forever with the phantoms, would you?
I think I'll go play my guitar for a while. For some reason Ghost Riders in the Sky is on my mind.