A ghost???

One afternoon hubby and I FINALLY stopped at the Laws Railroad Museum, which is just outside of Bishop, CA. We've driven by the signs so many times and never stopped, which is really strange because both hubby's father and grandfather were railroad men in Pennsylvania. So, with time to kill, we stopped there for a self-guided tour. There is no fee, although donations are greatly appreciated. It was like stepping back in time and I'll do a whole post or two on it later, but one photograph that hubby took intrigued me. (Of course, I had no such photos...!!!!) Now, mind you, he ALWAYS sets up his tripod, takes his time, composes his photos (much to my annoyance!), so how do you explain THIS? Carson, are you there? Anybody????