IMO it is more likely to be marsh gas (in the UK we call it ''will 'o the wisp'). Shame the attached link didn't show any photographs so I am only giving a guess here.
no, I wouldn't lose interest, I'm interested in any unusual natural phenomena not just the paranormal. It would be a little disappointing though since it is one of the few mysterious places in my state. I've heard a little about the will 'o wisp, did they ever figure out what they were?