A large, framed oil painting depicting a historical battle scene is prominently displayed on a dark blue-grey wall

A large, framed oil painting depicting a historical battle scene is prominently displayed on a dark blue-grey wall. This painting, "The Battle of Kleidion" (also known as the Battle of Klyuch or Belasitsa) by Dimitar Gyudzhenov, is located in the National Museum of Military History, Sofia, Bulgaria. The painting portrays a chaotic clash between two armies on a rolling, green landscape under a menacing, dark grey sky. In the foreground on the left, a white horse lies fallen with a rider, amidst charging cavalry. Horsemen on both the left and right flanks are engaged in combat, wielding bows, swords, and lances, moving towards a central infantry formation. The midground features dense lines of infantry soldiers, uniformed and equipped, creating a barrier across the field. In the distant background, a prominent hill with a visible structure on its summit overlooks the battlefield. Smoke and light from explosions or distant conflict are visible on the far right. Above the painting, a white air conditioning unit is mounted on the wall, with a small white rectangular sensor positioned slightly to its right. Below the painting, a grey radiator with a white valve is fixed to the wall.