Descriptive Attribute	Value(s)
Stage	Stage 2
Location	Directly on top of canal. Six capstones excavated along canal course.
Overlies	Loci 8, 9, 17, 19.
Underlies	Loci 3, 2, 1.
Phase	I
Description	Locus 18 comprises the capstones that serve as the cover of the canalization system branch present in Trench 55A. The capstones are large sandstone blocks which rest directly on the walls of the canal. A number of small spaces between the capstones were filled with tightly placed small stones, possibly to prevent air from entering system. The southernmost capstone serves as part of the foundation for the south wall.
Stage Description	Leveling platform constructed over the foundation fill and canalization cut into the platform/fill.
Bottom (m)	Closing Levels: 905.041 m, 905.049 m (two different capstones).
Definition	Capstones
Phase Description	Phase I: Preparation: 1st c. BCE subterranean canalization is installed and the bedrock leveled with a coarse yellow soil.
Top (m)	Opening Levels: 905.341m, 905.049 m (two different capstones).
Combined with	None.
Architectural or Soil Locus?	Architectural