Landforms of Kakadu lowlands
The gently undulating lowland plains-the Koolpinyah Surface-stretch over much of the Top End. The soils are shallow and often overlie extensive sheets of laterite (ironstone) and a thick profile of strongly leached rocks.
These mottled yellow-brown rocks can be seen in road cuttings north of Cooinda on the Kakadu Highway. Resistant ancient rocks remain as low strike ridges or hills in various places.
Travelling anywhere in Kakadu, you cannot help noticing the lowlands-they make up nearly 80 per cent of the park.