Bosna () is a ridge in the northern reaches of the

Strandzha Strandzha (, also transliterated as ''Strandja'', ; , or ) is a mountain massif in southeastern Bulgaria and East Thrace, the European part of Turkey. It is in the southeastern part of the Balkans between the plains of Thrace to the west, th ...

mountain range situated in the south-eastern part of the

Balkan peninsula The Balkans ( , ), corresponding partially with the Balkan Peninsula, is a geographical area in southeastern Europe with various geographical and historical definitions. The region takes its name from the Balkan Mountains that stretch throug ...

close to the

Black Sea The Black Sea is a marginal sea, marginal Mediterranean sea (oceanography), mediterranean sea 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 bound ...

coast. While Strandzha is shared between

Bulgaria Bulgaria, officially the Republic of Bulgaria, is a country in Southeast Europe. It is situated on the eastern portion of the Balkans directly south of the Danube river and west of the Black Sea. Bulgaria is bordered by Greece and Turkey t ...

and

Turkey Turkey, officially the Republic of Türkiye, is a country mainly located in Anatolia in West Asia, with a relatively small part called East Thrace in Southeast Europe. It borders the Black Sea to the north; Georgia (country), Georgia, Armen ...

, the Bosna ridge is located entirely within the Bulgarian section of the mountain range. Its highest peak is Papiya (501,4 m). The ridge is approximately 65 km in length and 25 km in width. Most of Bosna falls within the borders of

Strandzha Nature Park Strandzha Nature Park ( ''Priroden park Strandzha'', also transliterated as Stranja Nature Park) is the List of protected areas of Bulgaria, largest protected area in Bulgaria spanning a territory of in the Strandzha Mountain in the extreme sou ...

, the largest protected area in Bulgaria.

References

* Encyclopedia Bulgaria, Volume 1, published by the Bulgarian Academy of Sciences, Sofia, 2011, p. 339 (in Bulgarian) Mountains of Bulgaria Strandzha {{Burgas-geo-stub