The cut in the bedrock is multileveled and highly irregular. Some portions of the cut have resulted in regularized bedrock which may have served as a base for construction layers. The deepest portion of the cut may have been associated with the well head, SU 6236, but with the later phase addition of wall SU 6321, the extent of the cut cannot be determined without significantly undercutting the newer wall.
Portion of Room G-8
Photo from south