Some lunar crater-wall landslides strongly resemble martian gullies, despite the lack of geologically active water on the Moon today or in the past. The lunar features indicate that alcove–channel–apron morphology, attributed on Mars to seepage of liquid water, can also form via a dry landslide mechanism. Therefore a more stringent test than just an alcove–channel–apron morphology is necessary to differentiate dry landslides from water carved gullies.