Could be a hog house sewage slurry lagoon, I see what looks like a pump out on the far right corner. I’m not sure about the humps on the bottom, but they might control the current to avoid a whirlpool effect when pumping out the pond. Just guessing here.
Could be a hog house sewage slurry lagoon, I see what looks like a pump out on the far right corner. I’m not sure about the humps on the bottom, but they might control the current to avoid a whirlpool effect when pumping out the pond. Just guessing here.
This is almost certainly it. I agree those lumps on the bottom look intentionally designed to prevent sloshing when filling the pond