An indoor swimming pool in Sofia, Bulgaria, is depicted from a low vantage point near the water's edge

An indoor swimming pool in Sofia, Bulgaria, is depicted from a low vantage point near the water's edge. A swimmer, wearing a white cap and a blue and white swimsuit, is in mid-stroke (crawl) in the pool's lower-left section, creating ripples and splashes in the blue water. Four clear plastic water bottles with blue caps are positioned on the light-colored tiled pool deck in the lower-right foreground; one bottle displays a "Saguaro" brand label. A white starting block with a blue number '6' and a silver handrail is partially visible on the right, showing signs of water spray. Yellow and red lane ropes extend horizontally across the pool, delineating lanes, with black triangular flags bearing the "arena" logo suspended above them at intervals. In the distant background, several more starting blocks are visible at the far end of the pool, along with indistinct figures near them. The facility's background features large, multi-paneled windows on the right wall, a reflective white ceiling with overhead lighting, and light blue and white walls. A dark, rectangular object, possibly a scoreboard, is affixed to the far wall.