Post by Freak If there is evidence of other structures like barracks, a septic or water tank is likely. |
I think this is highly unlikely. I used to sell hatch covers for water/wastewater. Even the REALLY old steel ones for things like septic systems, lift stations and valve vaults were almost always cast into a concrete form and sat flush (pardon the pun) with the ground. The newer ones (over the last 30+ years) are mostly made from aluminum plate.
Given the heavy hinges and the number of doors I'd say you may have something interesting on your hands. It looks like its in a pretty moist area and the hatches themselves are raised I would go with some type of electrical equipment either being there or having been there.
Its pretty easy to see if they have been welded shut but you may have to get dirty doing it but given their size and thickness I'm not sure one person could lift the thing even if they weren't welded!
Look into who the current owner of the property is and ask them. Neighbors may be of some use here as well. Maybe a closer examination of any markings or writing may be found. The hinges are probably cast iron or steel and will probably have something marked.
The mystery continues... Lets get some answers!