page_title: Geography of Bulgaria
section_title: Transitional region
hierarchical_section_title: Geography of Bulgaria / Topography / Transitional region
caption_attribution_description: English: Rose Valey Bulgaria near Rosino Village
context_page_description: Bulgaria is a country situated in Southeast Europe and occupies the eastern quarter of the Balkan peninsula, being the largest country within its geographic boundaries. It is bordering Romania to the north, Serbia and North Macedonia to the west, Greece and Turkey to the south, and the Black Sea to the east. The northern border with Romania follows the river Danube until the city of Silistra. The land area of Bulgaria is 110,994 square kilometres, slightly larger than that of Iceland or the U.S. state of Tennessee. Considering its relatively small size, Bulgaria has a great variety of topographical features. Even within small parts of the country, the land may be divided into plains, plateaus, hills, mountains, basins, gorges, and deep river valleys. The geographic center of Bulgaria is located in Uzana.
context_section_description: The Transitional geomorphological region encompasses the territory between the Balkan Mountains and the Rilo-Rhodope Massif and has complex, mosaic relief composed mainly of medium-high and low mountains, valleys and plains. The altitude decreases from west to east. This region includes the Sub-Balkan valleys; the mountains and valleys of the Kraishte region, such as Ruy Mountain, Miloslavska planina and Milevska Planina; the mountains Lyulin, Vitosha, Sredna Gora, Strandzha and Sakar; the Dervent Heights; as well as the fertile Upper Thracian Plain. The highest point is Cherni Vrah in Vitosha at 2,290 m.
  The Sub-Balkan valleys include nine valleys, situated between the Balkan Mountains in the north and Vitosha and Sredna Gora in the south. With an area of 1,186 km² and an average altitude of 550 m, Sofia Valley is the largest of the nine and contains the nation's capital, Sofia. The Rose Valley encompasses the valleys of Karlovo and Kazanlak and is renowned for its rose-growing industry, which has been thriving there for centuries, producing 85% of the world's rose oil. The Kazanlak Valley is also known as the Valley of the Thracian Kings due to the extremely high concentration and variety of monuments of the Thracian culture.
  Srednogorie region stretches between the Sub-Balkan valleys in the north and the Rilo-Rhodope Massif in the south and from west to east includes the mountains Zavalska, Viskyar, Lyulin, Vitosha, Plana and Sredna Gora. The largest of these, Sredna Gora, is 280 km and reaches a maximum width of 50 km. Kraishte region covers the western parts of the Transitional geomorphological region and consists of two almost parallel mountain groups, Ruysko–Verilska and Konyavsko–Milevska, as well as numerous valleys.
  The Upper Thracian Plain encompasses the middle valley of the river Maritsa and has a roughly triangular shape, situated between Sredna Gora in the north, the Rhodope Mountains in the south and Sakar Mountain in the east. The lowland is 180 km long and up to 50 km wide, spanning an area of 6,000 km². To the east are located the Burgas Plain, Svetliyski Heights, Manastirski Heights, Dervent Heights, and the low mountains Sakar and Strandzha.
caption: The Rose Valley
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