What mountain in Australia keeps rain from getting to the outback?

Answer 1

There is no single mountain that stops rain getting to the Australian outback. However, the Great Dividing Range is an extensive and complex mountain range which runs down the eastern seaboard of the continent from Cape York in Queensland right down to Victoria, including its western regions. This mounatin range is responsible for stopping a lot of rain from penetrating into the inlanc.

Answer 2

This is the Great Dividing Range. It extends about 3,500 km from far North Queensland down to western Victoria, and forms a barrier which doesn't actually stop the rain from getting to the outback, but it does limit it. Rain does not just come from the east in Australia.