What factor affects the appearance of features at terrain flight altitudes compared to maps?

The appearance of features at terrain flight altitudes can be significantly impacted by the perspective from which they are viewed. When flying at lower altitudes, the oblique view provides an angle that allows for a more three-dimensional understanding of the terrain, revealing contours, shapes, and features that may not be clearly discernible on a flat map. This perspective allows pilots and operators to recognize landmarks, elevation changes, and other geographic features in a way that a two-dimensional map may not adequately convey.

While altitude does play a role in how much detail can be seen, it's the oblique view that truly enhances perception and situational awareness, allowing for a more practical understanding of terrain in real-time operations. Factors like weather conditions and seasonal changes can certainly affect visibility and the appearance of certain features, but the core factor that influences the view and understanding of the terrain significantly while in flight is the oblique perspective.