So I went digging this past Sunday in an area that I have hit pretty hard for the past 7 months or so. There are areas that are so hard that I can get no probe through the top 12" or so, so I brought my soil sampling auger and it did the trick. Punched a bunch of holes in a grid, then probed them out. Found a large area that sounded promising, so dug a test hole and found that I had discovered a cistern...about 12' in diameter and 5' deep. Full of newer trash on the top, a layer of asphalt shingles, and then broken brick to the bottom. Along the inside edge there was a bit of older trash and I managed to pull a nice local beer out. Gave up on the cistern after a little bit and probed a few more holes. Found another area that was promising so dug another test hole. Turned out to be a trash pit dating to the 1910's. Full of mostly junk but did rustle up a few pharmacy bottles, one hutch soda, and another local beer. Also found this pharmacy bottle...embossed just "Greer's Pharmacy". Anyone know where this was? Dug in the Houston area. The trash pit continues...after about 9 hours of digging in the Texas heat I was spent and filled it all in. There are some every old pockets of glass in this area under the newer stuff...found this heartbreaker of an olive amber pontiled snuff bottle with a few pontiled soda bases. Nonetheless, fun stuff and amazing how a small area can keep turning up stuff even after 15+ digs.