 The Mount Lofty Ranges , which encompass Waterfall Gully , was first sighted by Matthew Flinders in 1802 . The gully itself was discovered soon after the establishment of Adelaide , and Colonel William Light , the first Surveyor General of South Australia , was said to have " decided on the site for Adelaide when viewing the plains from the hills near Waterfall Gully " . Nevertheless , the gully had seen human visitors long before the arrival of the Europeans , as the native population had lived in the area for up to 40 @,@ 000 years prior to Flinders ' appearance off the South Australian coast . 
 The Mount Lofty Ranges , which encompass Waterfall Gully , was first sighted by Matthew Flinders in 1802 . The gully itself was discovered soon after the establishment of Adelaide , and Colonel William Light , the first Surveyor General of South Australia , was said to <a href='been_done' title='1'><mark>have</mark></a> " decided on the site for Adelaide when viewing the plains from the hills near Waterfall Gully " . Nevertheless , the gully <a href='been_done' title='2'><mark>had</mark></a> seen human visitors long before the arrival of the Europeans , as the native population <a href='been_done' title='3'><mark>had</mark></a> lived in the area for up to 40 @,@ 000 years prior to Flinders <a href='null_genetive' title='4'><mark>'</mark></a>appearance off the South Australian coast . 
Da Mount Lofty Ranges , which encompass Waterfall Gully , was first sighted by Matthew Flinders in 1802 . The gully itself was discovered soon after the establishment of Adelaide , and Colonel William Light , the first Surveyor General of South Australia , was said to done " decided on tdasite fa Adelaide when viewing the plains from the hills near Waterfall Gully " . Nevertheless , thdaully done seen human visitors long before the arrival of thedaropeans , as the native population done lived in the daa for up to 40 @,@ 000 years prior to Flinders  appearance off the South Australian coast .