Darwin

Katherine

Northern

Territory

Tennant Creek

Barrow Creek

Alice Springs

Overland

Telegraph Line

Brisbane

South

Australia

Perth

Port Augusta

Sydney

Adelaide

Canberra

Melbourne

500 km

500 miles

Darwin

Katherine

Northern

Territory

Tennant Creek

Barrow Creek

Alice Springs

Overland Telegraph Line

Brisbane

South

Australia

Perth

Port Augusta

Sydney

Adelaide

Canberra

Melbourne

500 km

500 miles