What is the main idea of the paragraph?
Australia is an interesting country. It has wildlife you will never find in the U.S., such as kangaroos and koalas. There are waterfalls, cliffs, and beaches to explore. Some people like to go skiing in the mountains. If you like trains, you can take a ride on the Puffing Billy Steam Railway. You can even visit towns with interesting names like Mallacoota and Yarra Glen.