When Dad retired, he put together a too-large compost bin using concrete blocks. His garden was only about 3 times the size of his bin! I think he anticipated moving horse manure in because he was working elsewhere, building corals and owned a horse in those days. Mom would not have been too-happy about a big manure pile with a tiny garden. Maybe he was using the bin size as motivation for building a larger garden. I was duty-bound to help

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The presence of the bin inspired a pile-it and leave-it approach. We divided it in half and would leave one-half for 18 months. The 2nd pile was layered with some attention to nutrient balance and for holding moisture. There was very little material that wasn't in a good state of decomposition after 18 months.
Trained in having Gardens On Other People's Property (GOOPP

), I continued. However, I didn't feel comfortable building bins out of blocks elsewhere! I went underground ...
Digging out about 8" of rocky soil gives me material for capping a fairly large, deep pile in a 4' wide garden bed. Building the compost pile can be obscured by the presence of bushes in one garden and just by distance from the garden parameter in another. After several months, I have enough material to cap it with soil. I try not to leave something that looks like a gravesite through the winter

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By the following spring, the material is in no way "composted." However, I have found these beds suitable for squash in the vegetable garden and sunflowers, elsewhere. After a growing season and a second winter, that bed is just fertile ground for most anything.
Using a semi-subterranean approach really helps in this semi-arid location. I can tell you how it led me into truly "stealth composting" at another time but you would have to promise not to tell my neighbors.

Steve