The range stretches east to west for a distance of approximately 40 kilometres (25 mi); it is surrounded by the Burt Plain. The highest point of the Hann Range is Mount Evatt with an elevation of 802 metres (2,631 ft). The Stuart Highway bisects the range not far from Mount Evatt.[2]
The range is situated in the Ngalia Basin at the south and eastern end. The area is composed of a well defined ridge of silicified brown sandstone overlaying the basement rock.[3] The ridge is made up of outcropping Vaughan Springs quartzite of a similar age and lithology to the Heavitree quartzite that overlooks Alice Springs.[1] The metamorphic basement is composed of Mount Bleechmore granulite.[3]