Wurdi Youang

[1] The site was acquired by the Indigenous Land Corporation on 14 January 2000 and transferred to the Wathaurong Aboriginal Co-operative on 17 August 2006.

[2] The stone arrangement takes the form of an irregular egg-shape or ovoid about 50 m (164 ft) in diameter with its major axis aligning east-west.

[9] A series of stones, located to the west of the arrangement's western apex, mark the positions of the setting sun at the equinoxes and solstices.

Additionally, the straight sides of the arrangement, which diverge from its eastern apex, also indicate the setting position of the sun at the solstices to within a few degrees.

[3] It has been suggested by scientists studying the arrangements that it could be as old as 11,000 years (based on carbon dating at nearby sites),[11] which could make it the oldest astronomical observatory in the world.