Swirling Bubble Colors on Salt Crystals

Vivid iridescent bands of teal, magenta, and gold swirl across the thin membrane of a soap bubble resting on jagged white salt crystals. The crystals form a rough, crystalline rim under dim twilight filtering through a window and warm interior lamps. Deep shadows pool in the crevices of the salt, creating pockets of dark amber against the bright, jewel-like sheen of the bubble. In the blurred background, the side of a passenger train car sits embedded directly into the salt pan floor, its metal surface reflecting the same warm interior light. The shallow depth of field renders the train slightly soft while keeping the bubble's interference patterns sharp. A final highlight catches the edge where the bubble touches a sharp salt spike.