Cronulla's sand dunes survived Mad Max but now face a more insidious threat

The once vast sand dunes in Sydney's south have been farmed, mined, filmed and eroded by wind and rain. Now they face encroaching housing developments

The gigantic Cronulla sand dunes were a wilderness when the First Fleet arrived in the land that would be Australia. More than 200 years later, they are far smaller.

Related: Cronulla sand dunes: the 15,000-year-old landscape that greed destroyed - in pictures