Being in the Southern Hemisphere, the northern end of Australia is the warmest. In the lands east of Darwin on the northern coast, there is monsoon forest. A distinctly Australian tropical forest, very dry part of the year, alternating with periods so wet the low spots all become lakes and the roads disappear.
Kakadu National Park preserves a big part of that region for
visitors to marvel at. It is the world's second largest national park and a World Heritage site (for both culture and nature), protecting a complex and diverse place.