Misdig

He described "daily soundings" as conditional soundings designed to check the progress of the work and to determine if there is "overdigging" or "misdigging."

If you have gaps, holes from misdigging, large rocks, roots, stumps, et al., you'll have to fill them in when you pour your footings and/or bottom(s).

The Ghosts stumbling through darkness, incapable of seeing her instructions, misdigging false channels, adding to the chaos of the Instant.