Here the Dnieper valley widens and numerous islands appear in the stream. The upper ones, for example, Khortizia and Tomakivka, which were once the site of the first Zaporog Sich, are high, rocky, and overgrown with forest. Further south the steep left-hand valley slope recedes far from the river and the so-called Veliki Luh begins. It is a labyrinth of flat forest and reed-covered alluvial islands, river branches, old river beds, lakes and swamps. Here were located the hunting and fishing grounds of the Zaporog Cossacks; here was their dwelling place, wonderfully fortified by nature and surrounded by an inaccessible wilderness of forests and waters, and the center of their military state; of the century-old oaks of the Veliki Luh, the Zaporogs built their ships, in order to pay their daring visits to the lord of Islam in his own capital. But the glorious days are past, the warlike life and activity has disappeared, and strange colonists, whom the Russian Government has sent here to settle, now occupy the ground on which the second Ukrainian state originated. From the many-branched mouth of the Konka (also named Kinska voda) the Dnieper River turns toward the southwest, which direction it retains until it disembogues into the sea. From this point on, the river nowhere flows in a single bed; an enormous number of side arms branch off from the main arm or unite with it. The broad river valley, whose right bank continues to be high and rocky for a time, is taken up by the plavni formation and winds like a broad band of freshly growing verdure thru the steppe, which stretches out dry and golden-brown in the hot midsummer. [80]After receiving, as its last tributary, the steppe-river Inhuletz, it empties with nine arms into its liman, below Kherson. Of these arms only two are navigable for larger vessels, and the immense Dnieper liman is at most only 6 meters deep. The river brings down great masses of sand and mud, and fills up its liman so rapidly that strenuous dredging is necessary, in order to make it possible for small sea-vessels to reach the harbor of Kherson. The Dnieper River brings the Black Sea, on the average, 2000 cu. m. of water per second. It is navigable, even for large river boats, along a stretch of 1900 km. The ice-cover lasts 100 days at Kiev; 80 days in the lower part of its course.