It bordered with Samnium and Campania in the north, Apulia in the east, and Bruttium in the south-west, and was at the tip of the peninsula which is now called Calabria.
The lower tract of the river Laus, which flows from a ridge of the Apennine Mountains to the Tyrrhenian Sea in an east-west direction, marked part of the border with Bruttium.
The main ridge approaches the western sea and continues from the lofty knot of mountains on the frontiers of Samnium, in a mostly southerly direction, to within a few miles of the Gulf of Policastro.
The Crathis, which forms at its mouth the southern limit of the province, belongs almost wholly to the territory of the Bruttii, but it receives a tributary, the Sybaris (Coscile), from the mountains of Lucania.
Historians at University of Naples Eastern Studies concluded that the root of the name Lucania is derived from luc, the Osco-Sabellic peoples word for light, which has the same meaning in the Latin idiom.
The people that moved from the Osco-Sabellic tribes to occupy the land east of the Sillaro River, which was an area associated with the morning star, Lucifer (Latin for bringer of light).
[4] The Lucanians gradually conquered the whole country (with the exception of the Greek towns on the coast) from the borders of Samnium and Campania to the southern extremity of Italy.
The country never recovered from these disasters, and under the Roman government fell into decay, to which the Social War, in which the Lucanians took part with the Samnites against Rome (90–88 BC) gave the finishing stroke.
In the time of Strabo the Greek cities on the coast had fallen into insignificance, and owing to the decrease of population and cultivation malaria began to obtain the upper hand.
A large part of the province was given up to pasture, and the mountains were covered with forests, which abounded in wild boars, bears and wolves.
In the late 10th century the Byzantines began to re-enter the region of Lucania forming the Catapanate of Italy with Salerno being granted autonomy.
By the early 11th century the Byzantine revival in Lucania came with both a process of Hellenization and significant Greek migrations from southern and central Calabria and Salento, into regions such as Cilento.
In the upland valley of the Tanagrus were Atina, Forum Popilii and Consilinum (near Sala Consilina); Eburi (Eboli) and Volceii (Buccino), though to the north of the Silarus, were also included in Lucania.