Steve, I just hate to be the usual party-pooper, but that dating is controversial and has not been confirmed by credible sources.
n October 2023, an article by Natawidjaja et al., published in Archaeological Prospection, claimed that Gunung Padang is the oldest pyramid in the world, dating as far back as 27,000 years ago. In March 2024, the publisher of Archaeological Prospection, Wiley, and the editors, retracted that paper, stating that:
...the radiocarbon dating was applied to soil samples that were not associated with any artifacts or features that could be reliably interpreted as anthropogenic or "man-made". Therefore, the interpretation that the site is an ancient pyramid built 9,000 or more years ago is incorrect, and the article must be retracted.[15]
The whole story is in the Wiki voice.
https://en.wikipedia.org/wiki/Gunung_Padang
