Gereshk
Gereshk occupied one of the easiest crossing places on the middle Helmand. Roads following the river towards Sistan and the central Afghan uplands met the longer route from Herat towards Kandahar and India. The crossing originally consisted of several fords; when water rose, rafts and ferryboats could become necessary. Control of the passage consequently mattered beyond the immediate oasis.
Safavid and Mughal armies fought over the fort and ford during their rivalry for Kandahar. A Persian governor was recorded at Gereshk in 1638, providing specific evidence of its strategic position. The older site, Kohna Gereshk, has yielded Islamic pottery extending into the sixteenth century. Accounts attribute its destruction in 1737 to Nader Shah and describe later damage by flooding, although that attribution remains reported tradition. Ferry service was also associated with a Persian-speaking Baluch community reputedly settled by Nader. Gereshk's history thus joined contested military authority to the practical work of moving people across the Helmand.