BittersMax
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I've encountered and dug numerous 20' deep privies but this last weekend I found the mother of all holes. I've been working on this permission for almost four years now and the property owner finally agreed to let me have my way. The area once contained a very elite massive three story brick hotel built in 1862. I located the privy which is 6 feet wide x 12 feet long and brick lined. It has a 10" concrete slab over the top of it and it sits in a tight area between two buildings. The hole is filled with 8' of rubble on top and then past that is another 12' of clean fill. At the 20' level there is a layer of bricks and beyond that who knows. It's been my experience that when an old concrete slab covers a deep hole that usually there will be an air void under the slab from the the trash decomposing and the ground settling. However there is no air void here and at least 20' of fill with no use layer making me question if it's worth digging or not. Saftey is not an issue but it would take a monumental effort to dig this monster even with a backhoe in such a tight area and breaking the 10" slab would be a bitch too. Has anyone ever dug such a thing that deep with no air void and that much fill and if so what was it like ???