South of Resht this section is broken through at almost a right angle by the Safid Rud (White river),and along it runs the principal commercial road between the Caspian and inner Persia, Resht-Kazvin-Teheran.
The northern slopes of the Elburz and the lowlands which lie between them and the Caspian, and together form the provinces of Gilan, Mazandaran and Astarabad, are covered with dense forest and traversed by hundreds (Persian writers say 1362) of perennial rivers and streams. The breadth of the lowlands between the foot of the hills and the sea is from 2 to 25 m., the greatest breadth being in the meridian of Resht in Gilan, and in the districts of Amol, Sari and Barfurush in Mazandaran.
Resht has a population of 60,000 and is the residence of English, Russian, French and Turkish consuls and the seat of the governor-general of the province of Gilan.
A good carriage road constructed and worked by a Russian company and opened to traffic in 1899 connects Resht with Teheran via Kazvin.
Sailing into the Caspian, he ravaged the Persian coasts from Derbend to Baku, massacred the inhabitants of the great emporium of Resht, and in the spring of 1669 established himself on the isle of Suina, off which, in July, he annihilated a Persian fleet sent against him.