Deir Central Hall

A View of the Central Hall of the Deir.

The interior layout of the Monastery consists of a single square chamber with a broad niche in the back wall. Each end of this niche contains four steps, and the niche itself is framed by pillars and a segmental arch. The room is thought to have been painted and plastered, even though none of these decorations have survived into the modern day.

Ad Deir. (2023, January 17). In Wikipedia. https://en.wikipedia.org/wiki/Ad_Deir

This room probably served as biclinium for the meetings (dinners) of religious associations.  During the Byzantine Period it was used as a Christian Chapel.

The Deir, or monastery, was probably built by the Nabatean ruler Malichus (40–70 A.D.).