Erickson-Gini (personal correspondence, 2021) reports that Nessana experienced seismic damage in the seventh century CE, at some point after 620 CE. Potentially related archaeological evidence was identified by Tchekhanovets et al. (2024), who documented a Byzantine–Early Islamic collapse layer in Area CC East. This deposit contained "building material, including light chalkstones, the stones of a collapsed vault arch, hard limestone slabs that were part of the ceiling of a second floor, wooden beams and plaster fragments," together with " Byzantine and Umayyad ceramic finds, several well-preserved organic fragments—among these ropes and textiles— two Byzantine folles dated to the early sixth century CE and various botanical remains."