After the unsuccessful siege of Sofia he retreated to Thrace, but was surrounded by the Bulgarian army under the command of Samuil in the Sredna Gora mountains.
It is a flat country with some hilly areas to the north where the souther slopes of Sredna Gora begin.
Zielona Góra | Jelenia Góra | Łysa Góra | Sredna Gora | Srebrna Góra, Lower Silesian Voivodeship | Srebrna Góra | Trzebiechów, Zielona Góra County | Tadeusz Góra | Kranjska Gora | Jasna Góra Monastery | University of Zielona Góra | Moslavačka gora | Fruška Gora | Bukova Gora | Zbylitowska Góra | Wioska, Góra County | Stanowice, Góra County | Sredna | Srebrna Góra (Silberburg) | Skopska Crna Gora | Petrova Gora | Mala Gora, Zreče | Mala Gora, Kočevje | Janiszów, Kamienna Góra County | Gora Kumbhar | Czerwona Góra, Świętokrzyskie Voivodeship | Bukova Gora, Kočevje | Baranowice, Góra County | Babna Gora, Šmarje pri Jelšah | Babna Gora, Dobrova–Polhov Gradec |
Residences and temples of the Odrysian kingdom have been found, particularly around Starosel in the Sredna Gora mountains.
It is surrounded by the Balkan Range (also known as the Stara Planina) to the north, Sredna Gora Mountain to the south, and Koznitsa and Galabets saddles to the east and west, respectively.
In the Tran, Rhodopes and Sredna Gora regions, the partisans were a constant threat to the government.