Which of the following is NOT considered a major terrain feature?

A major terrain feature typically refers to prominent natural formations that significantly affect navigation and tactical operations. In military terms, major terrain features include hills, valleys, and saddles, all of which play critical roles in determining lines of sight and movement options.

A hill is an elevated area that can provide a vantage point for observation and artillery placement. A valley is a low area between hills or mountains, often forming a natural route for movement. A saddle, which is a dip between two high points, can also influence the movement of troops and vehicles by providing a level crossing over an obstacle.

In contrast, a cliff, while it may represent a significant geographic feature, is not classified as a major terrain feature. Instead, it is typically considered a minor terrain feature; this is due to its more localized impact rather than its broad implications for navigation and operations. A cliff can present serious challenges for movement and may create obstacles, but it does not serve the same strategic purposes as the other features mentioned. Thus, identifying a cliff as not fitting into the major terrain feature category is accurate within the context of military and strategic considerations.