Analyze the regional geography of the Southern Hemisphere: Which vast, flat, semi-arid karst landscape, devoid of surface trees and underlain by porous limestone, spans across the southern margin of the Australian continent between the Eyre Peninsula and the Nullarbor plain?

💡 Solution & Explanation

The Nullarbor Plain is a vast, flat, arid limestone karst landscape in Australia where subterranean drainage prevents surface streams from forming, and the name literally translates to mean no trees. The Great Victoria Desert consists of sandy and stony plains further north, the Patagonian Plateau occupies southern South America in the rain shadow of the Andes, and the Gran Chaco is a hot lowland region in central South America. The trans-Australian railway crosses the Nullarbor via the world's longest stretch of straight railway track without any curves. Blowholes and deep caves honeycomb the underground limestone strata across this remote region.