sand shadow

sand shadow

[′san ‚shad·ō]
(geology)
A lee-side accumulation of sand, as a small turret-shaped dune, formed in the shelter of, and immediately behind, a fixed obstruction, such as clumps of vegetation.
References in periodicals archive ?
Shelly uses sand shadow art to convey the experiences of a mother and daughter infected with the parasitic disease schistosomiasis (see image 3).