A stream of bubbles rises through dark water, creating a shimmering column of light. A close-up of a weathered, rusty train rail on wooden sleepers, with sunlight casting shadows across the tracks. A close-up of a weathered, rusty train rail on wooden sleepers, with sunlight casting shadows across the tracks. A reflection of sunlight shimmers on the surface of dark water, creating a bright, moving path of light. A large flock of birds flies across a dusky blue sky, forming a dense, swirling mass. A large flock of birds flies across a dusky blue sky, dispersing and thinning as they move upward.