In Phase IX the Great Temple at Petra experienced catastrophic destruction, likely associated with one of the 363 CE Cyril Quakes. According to Joukowsky (2009) and Joukowsky (2007:33–35), the earthquake brought about the cave-in of the Propylaeum and the Lower Temenos cryptoportici, with their arches tumbling onto the floors. In the Lower Temenos, the West Triple Colonnade collapsed , its column drums crashing onto and damaging the Hexagonal Pavement. Repeated rows of deep horizontal indentations and shattered hexagonal flagstones mark the impact of the falling drums. Architectural fragments mixed with fill enveloped the area. The Upper Temenos also suffered major structural failures. The West Precinct Wall and the Cistern-Reservoir collapsed, and fluvial and wash-down deposits accumulated over the ruins. In their lower levels, remains of two human bodies were found, apparently caught in the sudden disaster. The West Walkway wall was destroyed, as were parts of the Residential Quarter and the Cistern-Reservoir. In the Shrine Room, abandonment was followed by structural collapse and progressive debris accumulation. The temple itself was also severely affected. The west Porch columns plummeted onto the Forecourt, pulverizing the hexagonal pavement, while other architectural elements crashed into both the Upper and Lower Temenos. The distribution of fallen columns, dented pavements, collapsed vaults, and displaced walls across the Propylaeum, Temenos precincts, Cryptoporticus, Baths, and Temple complex reflects a single high-energy seismic event. Although the Roman-Byzantine Baths continued in use after the earthquake, doorways were narrowed or closed and some rooms were abandoned, suggesting degradation from the original Nabataean bath.