Continued digging along the fence, and made it to the back corner.
Things were very predictable until I got to the corner. The rock base is fairly level and smooth, and only 6 to 10 inches under the ground level. There was one area where the material just about the rock was pulverized limestone; I've separated that and will get rid of it.
But the corner itself drops way down -- a foot or more. I haven't hit rock yet. I know that the utility people trenched in this area to put the underground power, telephone, and cable wires. I believe the pulverized limestone was the debris from that trenching down into the bedrock. The drop off into the corner is very sharp; in my mind it is artificially sharp, and I believe this is then the result of the trenching tool -- a big rock saw (more like a rock chainsaw).
Which raises the possibility that I am digging in the area with the buried utility lines. Just to be sure, I called the number for marking the utilities -- 1-800-DIG-TESS -- and will wait until they come out to mark where things are supposed to be. They said that would be by Wednesday, so I'll just continue digging next weekend.
Also, I'm going to cut down more of the bamboo, so I can continue with the digging, getting the rocks out of the soil, and improving the soil. I've posted on Craig's List to see if anyone wants the bamboo stalks that I have.
I got a response from Craig's List (a couple, in fact), and someone came by today (Monday 31 Aug) to pick up the bamboo. I used the neighbor's electric chain saw to cut them off just at ground level. It makes a big difference! It is much sunnier now in this area. This gives me the room needed to dig up a larger part. There is still a healthy patch of bamboo over in the other corner. I'm sure it will spread, in time, to reclaim the whole area, but, for now, I can dig up the ground and try to make it a much more fertile area -- more compost, fewer rocks, more uniformly mixed.
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