View of the city of Sliven and the eastern Upper Thracian Plain from southern Stara Planina

The Upper Thracian Plain (Bulgarian: Горнотракийска низина, Gornotrakiyska nizina) constitutes the northern part of the historical region of Thrace. It is located in southern Bulgaria, between the Sredna Gora mountains to the north and west; the Rhodopes, Sakar and Strandzha to the south; and the Black Sea to the east. A fertile agricultural region, the Upper Thracian Plain proper has an area of 6,032 km² and an average elevation of 168 m. Image File history File linksMetadata Download high-resolution version (2477x1982, 2542 KB) © Evgeni Dinev 18:18, 26 October 2006 (UTC) Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1. ... Image File history File linksMetadata Download high-resolution version (2477x1982, 2542 KB) © Evgeni Dinev 18:18, 26 October 2006 (UTC) Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1. ... Sliven (Bulgarian: Сливен) is a town in southeast Bulgaria and the administrative centre of Sliven Province. ... Stara Planina, Rhodope, Rila and Pirin Mountains The Stara Planina (Old Mountain) or Balkan mountain range is an extension of the Carpathian mountain range, separated from it by the Danube River. ... Thrace (Bulgarian: , Greek: , Latin: , Turkish: ) is a historical and geographic area in southeast Europe. ... A view of Sredna Gora from the Thracian tomb near Starosel Sredna Gora (Средна Гора) is a mountain range in central Bulgaria, situated parallel with Stara Planina and extending to the river Iskar to the west and the elbow of Tundzha north of Yambol to the east. ... The Rhodopes (also spelled Rodopi) are a mountain range, with over 83% of its area in southern Bulgaria and the remainder in Greece. ... Sakar (Bulgarian: Сакар or Сакар планина, transliterated as Sakar planina) is a mountain in southeastern Bulgaria, between the rivers Maritsa, Tundzha, Sokolitsa and Sazliyka and close to the borders with Greece and Turkey. ... View from Papiya Peak (502 m) in Bulgarian Strandzha A landscape from the Bulgarian part of Strandzha Strandzha (Bulgarian: , also transliterated as Strandja and Stranja; Turkish: Yıldız DaÄŸları or Istranca) is a mountain massif in southeastern Bulgaria and the European part of Turkey, in the southeastern part... Map of the Black Sea. ... A square metre (US spelling: square meter) is by definition the area enclosed by a square with sides each 1 metre long. ... The metre, or meter (U.S.), is a measure of length. ...

The plain is part of Northern Thrace (Северна Тракия, Severna Trakiya) (as opposed to Western Thrace and Eastern Thrace to the south), which refers to the whole of southern (sub-Balkan) Bulgaria east of the Mesta River and Sredna Gora (thus also including hilly or mountainous terrain). Western or Greek Thrace is the part of Thrace located between the rivers Nestos (Bulgarian Mesta) and Evros (Bulgarian Maritsa, Turkish Meriç) in northeastern Greece. ... Prominent issues in Greek foreign policy include a dispute over the name of the Former Yugoslav Republic of Macedonia, the enduring Cyprus problem, Greek-Turkish differences over the Aegean, and relations with the USA. The Former Yugoslav Republic of Macedonia Greek refusal to recognize the Former Yugoslav Republic of Macedonia... Stara Planina, Rhodope, Rila and Pirin Mountains The Balkan mountain range (Bulgarian: Stara Planina, Old Mountain) is an extension of the Carpathian mountain range, separated from it by the Danube River. ... Mesta (Bulgarian: Места) or Nestos (Greek: Νέστος) is a river in Bulgaria and Greece. ...

The climate is transitional continental. The highest temperature recorded in Bulgaria occurred here: it was 45.2 °C at Sadovo in 1916. The precipitation is 550 mm a year. Important rivers are the Maritsa and its tributaries, the Tundzha, the Stryama, the Topolnitsa, and the Vacha. The degree Celsius (°C) is a unit of temperature named after the Swedish astronomer Anders Celsius (1701–1744), who first proposed a similar system in 1742. ... The Maritsa or Evros (Bulgarian: Марица, Greek: Εβρος, Romanized as Hebrus, Turkish: Meriç) river is ca . ... The Tundzha (Bulgarian: Тунджа, Turkish: Tunca) is a river in Bulgaria and Turkey and the most significant tributary of Maritsa, emptying into it on Turkish territory near Edirne. ... The Topolnitsa (Тополница) is a river in southern Bulgaria, an important tributary of the Maritsa. ... Vacha (Antonivanovtsi Dam, renamed by edict from 1999) is a dam situated in south Bulgaria, Devin municipality, 680 m above sea level. ...

Important cities include Plovdiv, Burgas, Stara Zagora, Pazardzhik, Asenovgrad, Haskovo, Yambol and Sliven. Plovdiv (Bulgarian: ; Thracian: Evmolpia, Pulpudeva; Greek: / Philippoupoli, Philippoupolis; Turkish: ) is the second-largest city in Bulgaria, after Sofia, with a population of 341,873([1]). It is the administrative centre of Plovdiv Province in southern Bulgaria, as well as the largest and most important city of the historical region of... Burgas (also transliterated as Bourgas; Bulgarian: Бургас) is the second-largest city on the Bulgarian Black Sea Coast. ... Stara Zagora (Cyrillic: Стара Загора) is a large city and an important economic centre of southern Bulgaria. ... Pazardzhik (Bulgarian: ,also spelled as Pazardjik) is a town situated along the banks of the Maritsa river in Bulgaria. ... Asenovgrad (Bulgarian Асеновград) is a town in Southern Bulgaria. ... Haskovo (Bulgarian: Хасково) is the name of a town (and administrative center of the region of the same name) in Southern Bulgaria. ... Yambol (Bulgarian: Ямбол, also transliterated as Jambol) is the principal town in Yambol Province, Bulgaria, located on the Tunzha River. ... Sliven (Bulgarian: Сливен) is a town in southeast Bulgaria and the administrative centre of Sliven Province. ...

References

• Collective (2002). Balgarska entsiklopediya A-YA. Sofia: IK Trud.