To the north of the Gulf of Burgas, which is the westernmost extremity of the Black Sea, rise the fine porphyry mountains which terminate in the superb Cape of Emineh. They are sometimes described as an eastern prolongation of the Balkan, but erroneously, for the ancient lacustrine basin of Karnabat, now traversed by a railway, separates them from the system of the Hæmus. The granitic plateaux and mountains of Tunja and Stranja, which command the wide plain of Thracia on the north, are likewise separate mountain ranges. The Southern Balkan is, in reality, without ramifications or spurs, except in the west, where the mountains of Ikhtiman and of Samakov, so rich in iron ore and thermal springs, and other transverse chains, connect it with the mountain mass of the Rhodope. The upper basin of the Maritza River, enclosed between the Balkan and the Rhodope, has the shape of an elongated triangle, whose apex, directed towards the plain of Sofia, indicates the point of junction between the two systems. The whole of this triangular depression, with its lateral ramifications, was formerly occupied by lakes, now converted into bottom-lands of marvellous fertility. The passes near the apex of this triangle are naturally points of the highest strategical and commercial importance. Through one of them, still marked by ancient fortifications, and known as Trajan’s Gate, passed the old Roman highway, and there, too, the railway now in course of construction will cross the summit between the two slopes of the peninsula. This is the true “gateway of Constantinople,” and from the most remote times nations have fought for its possession. The numerous tumuli scattered over the neighbouring plains bear witness to many a bloody struggle.

The spurs of the Rhodope intermingle with those of the Balkan, and the lowest {135} pass which separates the two still exceeds 3,000 feet in elevation. The Rilo Dagh, the most elevated mountain mass of the Rhodope, boldly rises at its northern extremity, and, to use the expression of Barth, forms the shoulder-blade of junction. Its height is 9,580 feet. It rises far beyond the region of forests, and its jagged summits, pyramids, and platforms contrast strikingly with the rounded outlines of the Balkan. But the lower heights, surrounded by this imposing amphitheatre of grand summits, are covered with vegetation. Forests of pines, larches, and beech-trees, the haunts of bears and chamois, alternate with clumps of trees and cultivated fields, and the villages in the valleys are surrounded by meadows, vineyards, and oaks. Picturesque cupolas of numerous monasteries peep out amongst the verdure: to their existence the mountain owes its Turkish name of Despoto Dagh, i.e. “mountain of the parsons.” The Rilo Dagh, likewise famous on account of its monasteries, has altogether the aspect of the Swiss Alps. The moist winds of the Me­di­ter­ra­nean convey to it much snow in winter and spring, but in summer the clouds discharge only torrents of rain, and the snow rapidly disappears from the flanks of the mountains. These sudden rain-storms are amongst the most remarkable spectacles to be witnessed. In the forenoon the mist which hides the tops of the mountains grows dense by degrees, and heavy copper-coloured clouds collect on the slopes. About three in the afternoon the rain begins to pour down, the clouds grow visibly smaller, first one, then another summit is seen through a rent in the watery vapours, until at last the air has become purified, and the mountains are lit up in the sunset.

To the south of the Rilo Dagh rises the mountain mass of Perim, hardly inferior to it in height. This is the Orbelos of the ancient Greeks, and the rings to which Noah made fast his ark when the waters subsided after the deluge are still shown there, and even Mussulman pilgrims pay their devotions at this venerated spot. It is the last high summit of the Rhodope. The mountains to the south rapidly decrease in elevation, though the granitic formation to which they belong is spread over a vast extent of country from the plains of Thracia to Albania. The extent of the hilly region connected with the Rhodope is still further increased by numerous groups of extinct volcanoes, which have poured forth vast sheets of trachytic lava. The rivers which flow from the central plateau of Turkey into the Ægean Sea have cut for themselves deep passages through these granites and lavas, the most famous amongst which is the “Iron Gate” of the Vardar, or Demir Kapu, which formerly figured on our maps of Turkey as a large town.

The aspect of the crystalline mountain masses to the west of the Vardar is altogether of an Alpine character, for the peaks not only attain a high elevation, but snow remains upon them during the greater portion of the year. The Gornichova, or Nije, to the north of Thessaly, rises to a height of 6,560 feet; and the Peristeri, whose triple summit and snow-clad shoulders have been likened to the spread-out wings of a bird, and which rises close to the city of Bitolia, or Monastir, is more elevated still. The mountains of ancient Dardania enclose extensive circular or elliptical plains, and the most remarkable amongst these, {136} namely, that of Monastir, has been compared by Grisebach, the geologist, to one of those huge crater lakes which the telescope has revealed to us on the surface of the moon. In most of these plains we meet with swamps or small lakes, the only remains of the sheets of water which at one time covered them. The most extensive of these lakes is that of Ostrovo. The Lake of Kastoria resembles the filled-up crater of a volcano. In its centre rises a limestone hill joined to the shore by an isthmus, upon which is built a picturesque Greek town.

According to Viquesnel and Hochstetter, traces of glaciers do not exist in any of these ancient lacustrine basins, or on the flanks of the mountains. It is certainly remarkable that whilst other European mountains—as, for instance, the Vosges and the mountains of Auvergne—have passed through a glacial epoch, the far more elevated Peristeri, Rilo Dagh, and Balkan, under about the same latitude as the Pyrenees, should never have had their valleys filled by moving rivers of ice.[38]

All the large rivers of European Turkey belong to the Bulgarian regions of the Balkan or Hæmus. In Bosnia there are merely small parallel rivers flowing to the Save; Albania has only turbulent torrents forcing their way through wild gorges, like the Drin; but the Maritza, the Strymon or Karasu, the Vardar, and the Inje Karasu, which descend from the southern flanks of the Balkans, or originate in the crystalline mountain masses of the Rhodope, are large rivers, which bear comparison with the tranquil streams of Western Europe. As yet we know but little about their mode of action. The volume of water discharged by them has never been measured, and they are hardly made use of for purposes of navigation or irrigation. They all traverse ancient lake basins, which they have filled up gradually with alluvium, and converted into fertile plains. This work of filling up still goes on in the lower portions of these fluvial valleys, where extensive marshes, and even gradually shrinking lakes, abound. One of these lakes, the Takhino, through which the Strymon flows before it enters the Ægean Sea, is said to be the Prasias of Herodotus, and its aquatic villages were no doubt similar to the pile dwellings discovered in nearly all the lakes of Central Europe.

The Danube, to the north of the Dobruja, performs an amount of geological work, in comparison with which that of the Maritza, the Strymon, and Vardar sinks into insignificance. That mighty river annually conveys to the Black Sea a volume of water far in excess of that which is carried down the rivers of all France, and the solids which it holds in suspension are sufficient to cover an area of ten square miles to a depth of nine feet. This enormous mass of sand and clay is annually deposited in the swamps and on the banks of the delta, and the slow but steady growth of the latter is thus sufficiently explained. Even the ancients {137} anticipated a time when the Black Sea would be converted into a shallow pond abounding in sand-banks, and it must, therefore, afford some consolation to our mariners to be told that six million years must pass before the alluvium carried down the river will fill the whole of the Black Sea.

[Μ]

Fig. 39.—THE DELTA OF THE DANUBE.

Scale 1 : 1,500,000.