DERBENT, or Derbend, a town of Russia, Caucasia, in the province of Daghestan, on the western shore of the Caspian, 153 m.
To the north of the town is the monument of the Kirk-lar, or "forty heroes," who fell defending Daghestan against the Arabs in 728; and to the south lies the seaward extremity of the Caucasian wall (50 m.
But the most noteworthy feature of this section is the broad highland region of Daghestan, which flanks the main range on the north, and sinks down both eastwards to the Black Sea and northwards to the valley of the Terek.
The rest of the Daghestan region consists of a series of roughly parallel folds, of Jurassic or Cretaceous age, ranging in altitudes from 7500 up to 12,500 ft., separated from one another by deep gorge-like river glens which cut it up into a number of arid, treeless plateaus which have something of the appearance of independent ranges, or rather elongated tablelands of a mountainous character.
Radde's (1831-1903) monographs on Daghestan, quoted at the end of the present article.