Hi, Rory here. I was reading and... I lean towards methane gases. Low water table in a small pond. Makes for heavy thick folege in the spring and summer. Decomposeing . She right I think . I loaded trucks at a quarry in south east Missouri alittle bit south of Madison county. It was from 6 pm to 6 am. I saw some things. Goggle, the lights on Madison county Missouri. These sightings go back hundreds of years. I have seen some wild things like day light at 1 am! And I was married to a red head for an hour and a half! Lol!