At Umm it-Tuweneh, in north-east Syria, a basalt table top with a surface area of 1.3 m by 0.82 m and 0.2 m thick has been found in the middle of the church apse. It is decorated with a circle inscribed around the monogram Στέφανος.
Sources:
- Howard Crosby Butler: Early Churches in Syria. Fourth to Seventh Centuries. Princeton University Press, Princeton 1929, p. 82;(E. Baldwin Smith eds,p. 64)