Marree Man
en.wikipedia.org
en.wikipedia.org
"The figure is 2.7 km (1.7 mi) tall with a perimeter of 28 km (17 mi), extending over an area of about 2.5 km2 (620 acres)"
I'm sure theres a rich history of people claiming the pyramids/great wall/stone henge couldn't have been built without X technology, when they evidently were.
It is light on details such as how it was made (mechanics). But erosion has meant its needed to be redefined.
Visitors find it hard to grasp. Imagine if half the population of California inhabited the “lower 48” states. Where would they live?
But aside that, I doubt it will look spectacular close up.
> In England, 100 miles is a long distance. In the US, 100 years is a long time.
This likely applies to Australia as well. Note that this is a vast oversimplification as there is certainly culture in both Australia and the US that is much older than 100 years, but it gives the sense that the country is young - the difference between the old world and the new world.
> The Marree Man geoglyph depicts a man holding either a woomera (a throwing stick once used to disperse small flocks of birds) or a boomerang (but see Plaque section below).