Underground cistern, 35,20 m × 31,10 m, originally contained 42 pillars. Built of bricks (generally 385 mm. square); five brick-courses with mortar-beds measuring 480 mm.

Discovered in the summer of 1939, recorded by Mamboury.

Cistern concordance (Crow et al, 2008, p. 144): Bardill 2004: fig. 14; Mamboury 1951: 430-1.