Descriptive Attribute	Value(s)
Architectural or Soil Locus?	Soil
Definition	Rubble layer.
Top (m)	Opening levels: 899.226 m at center.
Phase	XI
Bottom (m)	Closing levels: 899.186 m at center.
Phase Description	Phase XI: Further collapse post- CE 5th c., possibly the result of the earthquake of CE 512. Major collapses...
Stage Description	Deposition of later collapse material and the accumulation of topsoil. Early levels of fill and debris covering the late features of the West Exedra.
Stage	Stage 6
Description	Locus 15 is a layer of rubble and large blocks, primarily sandstone (some of which was decaying) and may represent a localized collapse of stone from the top of the West Exedra wall where it runs straight east-west in the northwestern part of the trench. It was relatively small and removed within a single afternoon.