An outdoor scene in Borisova Gradina, Sofia, Bulgaria, displays a gathering centered around individuals in historical attire and commemorative flags

An outdoor scene in Borisova Gradina, Sofia, Bulgaria, displays a gathering centered around individuals in historical attire and commemorative flags. In the foreground, a light blue concrete edge of a water feature is visible, topped by a white metal railing spanning horizontally. Behind the railing, three prominent figures are positioned. A man in the center-left, with a dark beard and wearing a dark, possibly Cossack-style, uniform with a tall dark hat, holds a long dark rifle or musket horizontally. To his right, another man in a similar dark uniform and hat faces towards the first man, his back partially obscured. Further to the left, a man in a vibrant blue tunic with red accents, dark pants, and a red-banded dark hat stands, looking to his right. Additional individuals in similar attire are partially visible to the far left. Three flags are prominently displayed. The largest flag, centrally located, is divided vertically into red and green fields, featuring a central white circular emblem with a green leaf design. Cyrillic text reading "НАЦИОНАЛЕН СЪЮЗ" (National Union) and "ЕДИНЕНИЕ" (Unification/Unity) is visible. To its left, a yellow flag with a white circular emblem is present. To its right, a red, white, and blue flag, possibly incorporating a coat of arms on a white field, is also displayed. The background features a dense collection of evergreen and deciduous trees, with a large, pale-trunked willow tree on the far left. The sky is light blue with scattered clouds. Numerous indistinct figures, presumably spectators, are visible in the mid-ground behind the railing. The setting indicates a daytime public event, likely during late winter or early spring.