Largest meteor crater ever is hiding near Deniliquin in NSW: Experts believe space rock is bigger than the one  Daily MailAustralia hiding world’s ‘largest asteroid hit’  news.com.auAsteroid crater 520km in diameter buried deep in southeast Australia, scientists say - Australian Geographic  Australian GeographicMystery formation beneath Australia may be largest ever asteroid impact  Business InsiderAustralia Discovers A "Huge Structure" Buried Underground, Leaving Scientists Stunned  DMARGE