early this morning, decided to take advantage of cool weather to attack depressed central area of section of walk. the whole triangular centre was depressed, filled with weeds and rotting cement.
then i found the gopher paths, one running along the top edge of the triangle and the other straight thru. i often heard a sort of hollow sound when i tapped a stick or dropped a rock. good lord.
took the bulky, more solid cement and jammed it deep under bricks, adding piece after piece and hammering them back and in until they would go no further.then sprinkled dust and dirt in empty patch, tamped and dampened it down.
replaced bricks in more or less the same pattern. i think somewhat better. also, where i could, i busted out the ends of surrounding joints the better to prevent whatever future sinking i may have in store.
going to need more mud