What kind of business enterprise could this be?

So you have pick up trucks coming all times of day and night, unloading and then reloading and then coming back for another load sometimes within 15 minutes. Heavy loads. Also a lot of burning things and small and sometimes large fires. A lot of raking and bringing in new dirt to cover where the fires are and... show more So you have pick up trucks coming all times of day and night, unloading and then reloading and then coming back for another load sometimes within 15 minutes. Heavy loads. Also a lot of burning things and small and sometimes large fires. A lot of raking and bringing in new dirt to cover where the fires are and moving the fires from place to place. A country setting. I just can't imagine what they are doing any ideas? Thanks
Update: Open pickups sometimes they put sideboards up. Can't see what is in them though.
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