The image shows a long, straight line of smoke or vapor trail in the sky. The smoke appears to be from an airplane or a jet, as it is curving upwards towards the right side of the image. The sky is a pale blue color, and the sun is setting in the background, casting a warm orange glow over the horizon. The trail is made up of thin, wispy lines that create a trail-like shape. The lines are illuminated by the setting sun, creating a contrast between the light and dark colors of the sky and the smoke. The image is taken from a low angle, looking up at the trail.