Nearkhos remained in the harbour at Killouta for about a month after Alexander had departed, and then sailed during a temporary lull in the monsoon, as he was apprehensive of being attacked by the natives who had been but imperfectly subjugated, and whose spirit was hostile.[29] The date on which he set sail is fixed by Vincent as the 1st of October in the year B.C. 326. He proceeded slowly down the river, and anchored first at a place called Stoura, which was only 100 stadia distant from the station they had quitted. Here the fleet remained for two days, when it proceeded to an anchorage only 30 stadia farther down the stream at a place called Kaumana.[30] Thence it proceeded to Koreatis (v. 1. Koreëstis)—where it again anchored. When once more under weigh its progress was soon arrested by a dangerous rock or bar which obstructed the mouth of the river.[31] After some delay this difficulty was overcome, and the fleet was conducted in safety into the open main, and onward to an island called Krôkala (150 stadia distant from the bar), where it remained at anchor throughout the day following its arrival. On leaving this island Nearkhos had Mount Eiros (now Manora) on his right hand, and a low flat island on his left; and this, as Cunningham remarks, is a very accurate description of the entrance to Karâchi harbour. The fleet was conducted into this harbour, now so well known as the great emporium of the trade of the Indus, and here, as the monsoon was still blowing with great violence, it remained for four and twenty days. The harbour was so commodious and secure that Nearkhos designated it the Port of Alexander. It was well sheltered by an island lying close to its mouth, called by Arrian, Bibakta, but by Pliny, Bibaga, and by Philostratos, Biblos.