The "1st Earthquake" at el-Lejjun produced extensive damage throughout the site which may have been caused by the southern Cyril Quake. Lain and Parker (2006:130) established a terminus post quem of 355 CE in the aedes , where post-earthquake rebuilding included a new floor. Beneath this floor lay a layer yielding Early Byzantine pottery and two coins dated to 330–340 CE and 355–385 CE. A corresponding terminus ante quem derives from Room A.13, where Lain and Parker (2006:149) described a 0.25–0.33 m thick beaten-earth floor laid over fill after the first earthquake. In an intrusive pit (A.13.009), a hoard of 249 bronze coins dated 326–383/384 CE was recovered. The latest coin (no. 461), an issue of Arcadius (r. 383–384 CE), provides a terminus ante quem of 384 CE. This suggests that the destructive earthquake struck between 355 and 384 CE, probably corresponding to the southern Cyril Quake.