Direct archaeological evidence linking the 749 CE Holy Desert Quake of the Sabbatical Year sequence to destruction at the site has not been preserved, as the Umayyad-period complex had been dismantled down to its foundations long before modern excavations began. Greenberg, Tal, and Da'adli (2017:217) observe that "by the time the builders of the later structures— particularly of Tower 12 and the enceinte of which it seems to have been a part, came on the scene, the Umayyad remains had disappeared from sight, dismantled down to their foundations." They conclude that "it is not clear, either from historical documents or from the evidence on the ground, what brought Umayyad al-Sinnabra to an end." Yet this absence of evidence is itself telling. The thorough dismantling and disappearance of the palace suggest that it lay within the epicentral zone of the 749 CE earthquake. Its complete collapse rendered it an abandoned ruin, which was subsequently quarried for building stone until only the foundations remained. The once-grand palace became a source of dressed blocks for later construction projects, and its superstructure vanished entirely. Today, only foundation cracks documented by Greenberg and Paz (2010) remain as archaeological testimony to the violent destruction of al-Sinnabra in the mid-8th century CE.