>>2105332>>2103823seconding this.
Australia has some of the oldest terrain in the world, in some cases billions of years old.
It's been geographically dead for most of that.
We have volcanic plugs everywhere, which are extinct volcanoes where the rest of the mountain has eroded away and all that's left is the solidified magma in the center.
But even as small as our mountains are, the terrain is rugged. It took British settlers literally decades to figure out how to get past the Great Dividing Range because it was so impassible.
Fun fact: Australia's highest mountain isnt on mainland Australia. It's a volcanic island in the middle of buttfuck nowhere, in the southern Indian ocean.
