A lunar mapping team studies each crater by combining images taken under different lighting conditions. A low Sun can reveal a shallow ridge that disappears at noon. The shape of a crater, the material around it, and nearby overlapping marks help researchers estimate its relative age.

Mission planners also inspect slopes between a landing area and a possible science target. A small rover may cross level ground easily but require a longer route around a steep crater wall. The plan includes communication checks, rest periods, and alternate paths.

Not every circular feature is a crater. Some may be volcanic, while others may be artifacts in an incomplete image. Reviewers compare several sources before adding a crater to the final map.
