Kata Tjuta, formerly known as The Olgas, is a group of large ancient rock formations approximately 19 miles (30 kilometres) away from Uluru in Australia's Red Centre. Together these giant stone formations form the two major landmarks within the Uluru-Kata Tjuta National Park.

The 36 domes that make up Kata Tjuta are spread over an area of more than 12 miles (20 kilometres). The highest point is Mount Olga, which was named in honor of Queen Olga of Württemberg.

Uluru-Kata Tjuta National Park is jointly managed by its Anangu traditional owners and Parks Australia. Kata Tjuta is sacred to the Anangu people, who have inhabited the area for more than 22,000 years. The sandstone domes of Kata Tjuta are believed to be around 500 million years old. Kata Tjuta is a sacred site for men in the Anangu Aboriginal culture and many of the legends surrounding the site are kept secret.