A steamer moored to the bank of a river, probably at Rohri on the Indus; in the background an island fort - 1860
Watercolour of a steamer, possibly at Rohri in Sind, Pakistan, by William Simpson, dated c.1860. This image shows a steamer moored to the bank of a river, possibly the Indus, with an island fort in the background. Rohri, founded in 1297 and situated on a rocky prominence on the left bank of the Indus, was the headquarters of the taluk (administrative district) of the same name. The town of Sukkur was situated opposite and in between the two was the fortified island of Bhukkur.
Source : British Library
Yes, the fort in the background is the ancient Bhakkar Fort where Niccolo Manucci along with some of Dara's troops held out against Aurangzeb's troops around 1650. The fort has a long history that dates back to ancient times.