[Imp]

I am thinking soft & volcanic sand if they provide cover down 1 level to the crops field category, if dunes more like tilled field than a wooden building is the thinking. Soft sand I assumed represented loser sand looking much the same as any other & normaly discovered in RL by a vehicle getting stuck in it. Seem to remember parts of NA in WW2 were a nightmare & looked pretty much like normal sand in which case might soak up indirect fire a bit more than hard ground.