would a sod not eventually fall in on itself and collapse the burrow artfull12
not if you use a good thick sod mate that cud hold bit weight maybe if you use a skim of top the ground it would collapse but
the big sod at start works for me and the setts still get used but methods vary with the depth of hole ie we do a sett yearly which is 12 ft
which means the hole would be bigger it takes a bit of care and if done right youll dig same place again
but thats just my opinion