Ghost Story

So while I was in West Virginia I was went into this cave that was used as a civil war camp. Confederate soldiers lived here during the war. Many of the soliders were killed in battle though and never returned to the cave.
Earlier today I was watching a ghost tv show and there was a picture with streaks of light throughout the room. They believed that these streaks of light were spirits.
Well I have some pictures similar to this taken while we were in the cave.
I don't know how to explain them though. The places where these streaks of lights are...were dark? There weren't any lights there...

What do you think?