Accomplished horse-breeders and horsemen, the Sarmatians were Indo-European tribes known for their extremely fine metalwork in gold and silver that is often decorated with images in the animal style. Originally from Central Asia and the area south of the Ural mountains, the Sarmatians settled in a broad region north of the Black Sea, which corresponded to the western part of greater Scythia, encompassing the modern Ukraine, southern Russia, and the eastern Balkans. At their greatest extent Sarmatian tribes extended from the Vistula River in southern Poland to the mouth of the Danube and eastward bordering the Black and Caspian seas. Sarmatian expansion put an end to Scythian rule in the North Black Sea area in the 3rd century B.C., and they prospered from that time until the 4th century A.D., after which they declined due to migrations of the Huns and Goths.