a strip of earth 1 meter wide left standing between squares; provides a vertical face to allow archaeologists to see soil layers and what is in them
The twenty centimeter wall of earth between squares. The balk must be trimmed carefully with a trowel after each level is excavated.
a narrow barrier of earth within the ditch of an earthwork that was purposely left unexcavated. Balks sometimes marked divisions between units in the line. A balk might also serve as the base for a traverse made of logs.