Barchans and Yardangs

One of the tricks of desert navigation is remembering that wind direction is never entirely random and over time is actually quite dependable. If we know the direction the wind normally blows from and we have ways of reading that direction from the land then we can get our bearings, even when there is no wind at all.

If you are interested in the relationships between wind, sand and desert then there is a good introduction on this page from the Earth Science Australia website. It includes explanations of the great-sounding parabolic, star and barchan dunes and the even better sounding ‘Yardangs’.