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.