Description: The horizon line is the apparent line that separates the earth from the sky, a visual concept that has fascinated humanity since ancient times. This line is not static; it varies depending on the observer’s altitude and atmospheric conditions. On a clear day, the horizon line appears sharp and clear, while in foggy or rainy conditions, it may blur, creating a sense of continuity between the sky and the earth. The perception of the horizon line is also influenced by the curvature of the Earth, meaning that at higher altitudes, one can see further, extending the distance to where this line is perceived. This phenomenon has been the subject of study in various disciplines, from astronomy to philosophy, symbolizing the quest for the unknown and the boundary between the tangible and the ethereal. In art, the horizon line has been used as a compositional resource that guides the viewer’s gaze and establishes the relationship between elements in the landscape. In summary, the horizon line is a concept that transcends mere visuality, evoking reflections on perception, distance, and the connection between humans and their environment.