A yardang is a streamlined, wind-eroded ridge typically found in arid environments, formed by the abrasive action of windblown sand. Yardangs are significant in geomorphology for understanding wind erosion processes, the dynamics of desert landscapes, and the geological history of arid regions.
Reference: Greeley, R., & Iversen, J. D. (1987). “Wind as a Geological Process: On Earth, Mars, Venus, and Titan.” Cambridge University Press.