Which of the following is NOT one of the 5 major terrain features found on a map?

The reasoning behind identifying a river as not being one of the five major terrain features lies in the categorization of terrain on a map. The five major terrain features typically recognized are hill, ridge, valley, depression, and slope. These features are defined based on their elevation and topographic characteristics.

Rivers, although significant geographical features, are classified as linear features rather than major terrain features. They do not have the same topographic prominence as hills or ridges, which are associated with changes in elevation. Instead, rivers may indicate the location of valleys where the terrain can be lower, often running through these major features.

Understanding the classification of terrain features is crucial for navigation, land assessment, and strategic planning, making it essential for individuals in military roles to be able to distinguish between major terrain features and other geographical formations like rivers.