The Sub-Balkan Valleys ( bg, Подбалкански котловини, Podbalkanski kotlovini) are row of 11 valleys running from the Bulgarian border with Serbia east to the

Black Sea The Black Sea is a marginal mediterranean sea of the Atlantic Ocean lying between Europe and Asia, east of the Balkans, south of the East European Plain, west of the Caucasus, and north of Anatolia. It is bounded by Bulgaria, Georgia, Roma ...

. They are separating the

Balkan mountains The Balkan mountain range (, , known locally also as Stara planina) is a mountain range in the eastern part of the Balkan Peninsula in Southeastern Europe. The range is conventionally taken to begin at the peak of Vrashka Chuka on the border betw ...

from a chain of other mountains known as Srednogorie which includes

Vitosha Vitosha ( bg, Витоша ), the ancient ''Scomius'' or ''Scombrus'', is a mountain massif, on the outskirts of Sofia, the capital of Bulgaria. Vitosha is one of the symbols of Sofia and the closest site for hiking, alpinism and skiing. Conveni ...

and

Sredna Gora Sredna Gora ( bg, Средна гора ) is a mountain range in central Bulgaria, situated south of and parallel to the Balkan Mountains and extending from the Iskar to the west and the elbow of Tundzha north of Yambol to the east. Sredna Gora i ...

. There is great abundance of mineral waters. They are divided into two parts: Western (higher) and Eastern (lower). The western valleys include: Burel Valley;

Sofia Valley The Sofia Valley ( bg, Софийска котловина, Sofiyska kotlovina), or Sofia Field ( bg, Софийско поле, Sofiysko pole, link=no), is a valley in central western Bulgaria bordering Stara Planina to the northeast, the Viskya ...

; Saranska Valley; Kamarska Valley. The eastern valleys are:

Zlatitsa Zlatitsa ( bg, Златица ) is a town and the seat of the Zlatitsa Municipality in southern Bulgaria located in the Zlatitsa-Pirdop valley. It lies between Stara Planina to the north and Sredna Gora to the south at above sea level. It is si ...

Valley;

Karlovo Karlovo ( bg, Карлово ) is a historically important town in central Bulgaria located in a fertile valley along the river Stryama at the southern foot of the Balkan Mountains. It is administratively part of Plovdiv Province and has a p ...

Valley;

Kazanlak Kazanlak ( bg, Казанлък , Thracian and Greek Σευθόπολις (''Seuthopolis''), tr, Kazanlık) is a Bulgarian town in Stara Zagora Province, located in the middle of the plain of the same name, at the foot of the Balkan mountain ...

Valley; Valley;

Sliven Sliven ( bg, Сливен ) is the eighth-largest city in Bulgaria and the administrative and industrial centre of Sliven Province and municipality in Northern Thrace. Sliven is famous for its heroic Haiduts who fought against the Ottoman Turk ...

Valley;

Karnobat Karnobat ( bg, Карнобат ) is a town in the Burgas Province, Southeastern Bulgaria. It is the administrative centre of the homonymous Karnobat Municipality. According to the 2021 census, the town has a population of 16,483 inhabitants.htt ...

Valley;

Aytos Aytos ( bg, Айтос ), sometimes written Aitos and Ajtos, is a town located in eastern Bulgaria some 30 kilometers from the Bulgarian Black Sea Coast and belonging to the administrative boundaries of Burgas Province. It is the administrative ...

Valley.Мичев, Николай и др. Географски речник на България. София, Наука и изкуство, 1980. с. 378.

References

Geography of Bulgaria Valleys of Bulgaria Landforms of Bulgaria Valleys of Europe {{Authority control