This block represents part of a structure related to the shaft cut into the bedrock to serve the needs of drainage in Room 1 (cut SU 7190). The bedrock is clearly cut so as to accommodate this block in such a way that wall 7057 could be built on top. Thus properly the block is a kind of extra foundation for wall 7057, around the edge of a deep cut. The block extends north partly over the southern edge of cut 7190, but mostly rests on bedrock.