Snowy Mountains Scheme commemorative stampThe Snowy Mountains Hydro-electric  Scheme was an ambitious engineering project to turn back the waters of rivers that flowed east from the Snowy Mountains and channel them inland for electricity generation and irrigation. In the post-WWII period, it attracted migrant workers, who helped to change food culture in Australia. The Snowy Mountains Scheme commemorative stamp was issued on the 50th anniversary, in 1999.