Not too much progress this weekend. I got the rocks out of the hole from last weekend, and dug some more.
I've put the rocks out on the curb to get rid of them. Craig's List seems like a good way to get people to come haul them off. They use them as landscape rocks, I assume.
After getting the rocks out, which required using the jackhammer to break several into smaller more manageable pieces, the rest of the time was just digging, and moving the dirt out of the way.
There is a solid layer of rock about 20 inches down. I expect several weeks of just digging, to get the soil cleaned up, removing rocks and mixing in compost.