A day’s march farther on is the town of Goražda, guarded by the castle of Samobor, after which the route proceeds in a south-easterly direction over the finely wooded Metalka saddle, whence an extensive view of the mountains of Montenegro, Servia, Bosnia, and Albania is obtained, to Breznica.[224] This was an important centre in Roman times, and the remains of a large Roman settlement (name unknown) have been unearthed close by. In the Middle Ages it was the meeting point of three trade routes—one to Ragusa, one to Niš and Constantinople, and a third to Cattaro _via_ the Tara gorge, the source of the Piva, the castle of Onogošt, Nikšić, and Grahovo. From Plevlje the route travelled through what is now the Sandžak of Novibazar to Priepolje on the Lim, a favourite halting-place of the Ragusan merchants in the fourteenth century. On the opposite side of the river are the ruins of a fine large castle guarding the road, a stronghold of King Stephen Vladislav, who also built the adjoining monastery of Mileševa.[225] A few miles farther on was the point which was afterwards the eastern frontier of Stephen Kosača’s duchy. Another day’s march brings us to Senica or Senice, which was often the residence of the Nemanjid rulers of Servia. Here the route from Ragusa joined the one from Northern and Eastern Bosnia;[226] at Raška the two routes again separate, one going southwards to Salonica, the other eastwards to Niš. Just beyond Raška, in the latter direction, was Trgovište (market-place), often mentioned between 1345 and 1459 where a Ragusan colony was established. Two-thirds of the way from Ragusa to Niš were now accomplished. Trgovište was the centre of the great Servian Empire, and the surroundings abound in ruins and memories of the Nemanjid Tsars. At the end of the fifteenth century the town is alluded to as Novibazar (New Bazar, Yeni Bazar in Turkish). Not far off, in the valley of the Raška, are the remains of some Roman baths, and here was probably the site of the ancient Ras (mentioned in the tenth and eleventh centuries), which gave its name to the whole country (Rascia). From Trgovište the route proceeded by the Ibar valley through the mining district of the Monte Argentaro to Toplica, Prokoplje, and Niš. The whole journey took fifteen days in favourable weather. From Niš onwards the Ragusan caravans followed the great road to Constantinople or went to Bulgaria, where they had considerable trade and at least one colony at Vidin, in consequence of the privileges obtained from the Bulgarian Tsars.[227]