Recent research shows sand dunes in the Mid-West could easily engulf roads and buildings.

Guardian News 4 July 2014 p 35

The strange phenomenon begins when a dune become separated from the beach, and begins to travel inland as prevailing winds blow it along.

It may end up many kilometres from the coast before it runs out of sand.

In the meantime it engulfs anything lying in its path.

Science Network WA [read this story]