McCredle. J. R ... American School of Classical Studies at Athens ... Hesperia Supplement 11 978-0-87661-511-9 10.2307_1353930 10.2307_1353931 ... 1966
An extensive cistern system on the lower north slope of the Areopagus, south chamber with blind tunnel extending further south (south tunnel); north chamber; drawshaft further north, extends to north tunnel ... Ca. 320-240 B.C.