Cytryn-Silverman (2015:208) suggests that the covered hall of the Umayyad mosque at Tiberias was refurbished after the 749 CE Sabbatical Year Earthquakes. A row of columns was introduced along the middle of the aisles to strengthen the roof, apparently to compensate for structural damage caused by the earthquake. Cytryn (2016:112) notes that during this Phase III reconstruction, "a new series of rustic conglomerate foundations which bore columns of various heights" were laid "right in the middle of the central and southern aisles, in addition to those built against the stylobates." Cytryn (2016:112) describes the foundations of the mosque before the earthquake as "conglomerates of fieldstones in a hard greyish mortar thrown into pits which were dug in an artificial fill that leveled the area above the remains of the Roman period." Cytryn (2016:112) also noted that "the foundations vary in depth, implying that the columns above them were of different heights."