cause cracks and holes with subsequent cracks to occur (blast, pound, pound...)
put thin layer crushed/pulverized granite
put logs, thin layer p. granite
put deep layer green manure
put lesser size
wood (mixed species, branches, non-allelopathic), mixed dried weeds (no longer "propagatable" and other fibrous weedy substances with deep
root mineral stored accumulation...) pack..pack..pack
somewhere in process, check progress of soil wall/earth buildup integrity - is it holding? need more, long lasting heard wood, structure? Plant different variety oak seeds....
put complex, fibrous top (e.g. sod turned upside down other such rooty/soilish/bio-acccumalated mass) the weedy stuff you would never put in your compost pile (dried in sun above round first)
soil, compost, cover...
water, plant seed...