This cistern is 17.2 × 29 m in size. It is a five-aisled cistern that contains four rows of seven columns. It is situated near the Reservoir of Aetius (not to be confused with Bodrum Camii/Myrelaion).
The dating of this cistern is unclear. Stockpiled capitals were used as bases or as impost blocks, so as to increase the height of the column shafts. Among the various styles of capital were Ionic imposts, Corinthian capitals (including the lyre type), and double capitals. Two double capitals of the impost form published by Kautzsch are the latest capitals in the cistern, and therefore provide a terminus post quem for its construction in the 11th or 12th century (Crow et al., 2008, p. 139).
In the second half of the 19th century it was used by Armenian spinners. A fire in 1919 made them abandon the cistern, after which it was filled with rubble and debris. Today, only the northern part is accessible.
