I thought the same thing but wondered why they would be nowhere near any home and about 6” deep. And all in different area. Who knows but I think you are right.
On the farm we burned all our garbage and threw the ashes in the manure spreader, where it ended up being spread all over the farm. Whatever didn't burn completely ends up being found again by detectorists.
On the farm we burned all our garbage and threw the ashes in the manure spreader, where it ended up being spread all over the farm. Whatever didn't burn completely ends up being found again by detectorists.