The amazing thing is that there is a pond just a stone’s throw away (if even that far) and it’s not been drained into the hole.
The pond is actually very normal. I live in a Karst area with sinkholes all around my high ground. The sinkholes result when the cave roof below gives way.
The sinkhole drains naturally unless the drainage fissures become plugged. When that happens, a pond will form.
That is reality down the street. The new property owner brought in a small dozser to clear the slopes and the residue got pushed into the bottom. He now has a pond. With this year’s extremely heavy rains, a large pond