What monolith in Western Australia is claimed to be the largest in the world?

The monolith in Western Australia claimed to be the largest in the world is Mount Augustus. Known to the Wadjari people as Burringurrah, it rises dramatically from the surrounding plain in Mount Augustus National Park, about 1,000 kilometres north of Perth.

Mount Augustus reaches 1,106 metres above sea level and extends for almost 8 kilometres along its central ridge. It is more than twice the size of Uluru by area, which helps explain why tourism material has promoted it as the world's largest monolith. The landscape also has deep cultural importance, with Burringurrah associated with a Wadjari Dreamtime story about a young boy transformed into stone.

There is an important scientific qualification behind the question's wording. Geologists describe Mount Augustus as an asymmetrical anticline or inselberg, not a true monolith, because it contains multiple rock types and complex folded geology. Thus, Mount Augustus is the accepted answer to the “claimed” distinction, while the literal geological claim remains disputed.