Descriptive Attribute	Value(s)
Top (m)	Opening elevation: 895.762 m.
Description	Locus 19 defines a collapsed arch found partially seriated along the edge of the north balk of Trench 97 while excavating at the depth of Locus 9. Five abutting sandstone arch stones were excavated from beneath the 25th arch springer on the west side. The arrangement measured 2.70 m east west by 0.56–0.73 m north south [see sketch of 14/VII/04]. Beneath them was a large pile of architectural fragments deriving from the colonnade superstructure, including several column drums whose rounded sides provided sufficient support for the arch stones to remain articulated upon coming to rest. Distribution of the various architectural elements indicates that the surmounting columns crashed through into the center of the West Cryptoporticus East, landing on the subsurface before the west side of this arch collapsed. The surrounding fill was homogenous to that of Locus 9.
Architectural or Soil Locus?	Soil
Phase	XIV XI XII X IX XIII
Overlies	Locus 9.
Phase Description	Phase XII: Use levels, robbing and abandonments continue. Phase X: Site abandonment post major collapse dating to the Byzantine period from the CE 4th to 5th c.... Phase XIV: Modern period marked by Bedouin activity and the accumulation of recent debris. Phase XI: Further collapse post- CE 5th c., possibly the result of the earthquake of CE 512. Major collapses... Phase IX: Major CE 363 earthquake leads to the collapse of the West Colonnade directly on top of the... Phase XIII: Major collapses continue into the Islamic period.
Combined with	collapse elements in Loci 1,4, 2, 8, 9, 10, 20, and 21.
Stage Description	Major collapse.
Bottom (m)	Closing elevation: 895.302 m.
Definition	Arch from the 25th arch springer toward the north, collapsed in partial series along the north balk
Location	North, edge of north balk.
Stage	Stage 6
Underlies	Locus 9.