It's a huge area and it's very, very flat. Australia's geologically very inactive so any visible crater was gone many millions of years ago. An image would jus

It's a huge area and it's very, very flat. Australia's geologically very inactive so any visible crater was gone many millions of years ago. An image would just look like this: https://earth.google.com/web/search/Deniliquin+NSW/@-35.35229634,145.1015451,160.99601592a,520698.14216495d,35y,0h,60t,0r/data=CngaThJICiQweDZhZGYyZWQ5ODdjNWQ4YWQ6MHg0MDYwOWI0OTA0M2NhNzAZbUa8K3HEQcAhd5cwP1weYkAqDkRlbmlsaXF1aW4gTlNXGAIgASImCiQJ_7fJTCrtPEAR_7fJTCrtPMAZ5HCzFSfdRUAh7KEAvJvqUMAoAg https://earth.google.com/web/search/Deniliquin+NSW/@-35.3522... To give an idea of scale, the area they're talking about is equivalent to from Boston to Philadelphia. It's big.