In the 1960s, Manfred Bietak recognised that Pi-Ramesses was known to have been located on the then-easternmost branch of the Nile. He painstakingly mapped all the branches of the ancient Delta and established that the Pelusiac branch was the easternmost during Ramesses' reign while the Tanitic branch (i.e. the branch on which Tanis was located) did not exist at all. Excavations were therefore begun at the site of the highest Ramesside pottery location, Tell el-Dab'a and Qantir. Although there were no traces of any previous habitation visible on the surface, discoveries soon identified Tell el-Dab'a as the Hyksos capital Avaris. Qantir was recognized as the site of the Ramesside capital Pi-Ramesses. Qantir/Pi-Ramesses lies some to the south of Tanis; Tell el-Dab´a, the site of Avaris, is situated about south of Qantir.