Geography
The Development of Ventifacts and Desert Pavements in Arid Environments
Quick fact
Some ventifacts are shaped into three-faced 'dreikanter' forms, and desert pavements can remain stable for thousands of years, slowly rearranging as dust accumulates beneath them.
Why this is interesting
Ever noticed a rock that looks like it was deliberately sanded into a sharp-edged sculpture? In deserts, the wind does exactly that—and also creates entire pavements of tightly packed stones.