The formations are approximately 500 million years oldThe rock (Uluru) you see is only the tip of the, er, monolith. The rock mass extends up to 6 kilometres undergroundUluru is 348 meters tall (for reference, that's taller than the Eiffel Tower in Paris, the Chrysler Building in New York or the Eureka Tower in Melbourne)The circumference of Uluru is 9.4 km and it takes around 3 to 4 hours to walk depending on your fitness levelThe traditional owners of Uluru and Kata Tjuta are the Anangu peopleUluru-Kata Tjuta National Park is home to over 400 plant species and 21 species of mammalsThe rocks get their orangey-red colour from the oxidized iron minerals