The Trust Region is comprised of two of the six sub-regions of the Great Victoria Desert IBRA region, indicated by the darker orange colour in the map below. The Great Victoria Desert IBRA region has six regions and stretches from east of Kalgoorlie to west of Coober Pedy in South Australia. The Great Victoria Desert is the largest desert in Australia yet limited research has been conducted due to vast distances, inaccessibility and the high costs of mobilising people and equipment. There are no major towns in the region however, there are several Aboriginal communities within, or close to, the region.