Hyderabad? on R Indus, Ganjo Takkar is the only credible island where the Indus could have split into the two main branches forming the delta

@book{bib_Eggermont_1975_Alexander,
author={Eggermont, Pierre Herman Leonard},
publisher={Peeters Publishers},
title={Alexander's Campaigns in Sind and Baluchistan and the Siege of the Brahmin Town of Harmatelia},
volume={3}
}