This is tissected plateau of Kimberley Basin, covered with savanna woodland of Woolybutt and Darwin Stringybark over high Sorghum grasses and Plectrachne schinzii hummock grasses on shallow sandy soils on outcropping Proterozoic siliceous sandstone strata. Savanna woodlands on "Eucalyptus tectifica" - "Eucalyptus grandiflora" alliance over high Sorghum grasses on red and yellow earths mantling basic Proterozoic volcanics. Riparian closed forests of paperbark trees and Pandanus occur along drainage lines. Extensive Mangal occurs in estuaries and sheltered embayments. Numerous small patches of monsoon rainforest are scattered through the district.