The wheel and tire was completely in and the only thing preventing it from going in further was the axle. Had to use the front end loader on another tractor to lift it out of the hole.It appears there was an old well, cistern, outhouse, cellar or ? that had years ago been covered over with dirt, and has now caved in under the tractor’s weight.
There is about 3 feet of dirt, under which can be seen some old wooden boards. Below that is a layer of what looks like flat limestone rocks stacked a few feet thick, and under that can be seen a smooth limestone wall. Can’t see into it enough to tell how big the hole is. There’s no water in the bottom that I can tell. As it is the existing hole is not large enough to get down into it - don’t think I want to anyway. 
Ken
