Wurdi Youang in Australia is now recognised as probably the oldest solar observatory in the world, at around 11,000 years old. https://www.sciencealert.com/australia-s-wurdi-youang-stone-site-might-have-been-the-world-s-first-observatory Plenty of other references online, including the original academic papers. Reply
Wurdi Youang in Australia is now recognised as probably the oldest solar observatory in the world, at around 11,000 years old.
https://www.sciencealert.com/australia-s-wurdi-youang-stone-site-might-have-been-the-world-s-first-observatory
Plenty of other references online, including the original academic papers.