Earlier quoted context omitted.
> Over the years 2011 to 2015, they studied the structure using seismic tomography, electrical resistivity tomography and ground-penetrating radar. This has absolutely nothing to do with assessing the age of the site. I believe them that it's a complex structure with likely underground sites. I do not believe them that it's 25,000 years old. The age claim is based entirely on radiocarbon dating of organic soils found…
What have independent experts said about it? I see it passed peer review. Having no expertise myself, I know it's still easy to shoot down anything. That's why I always look to people with expertise, who know what's significant and what's not, because everything in the world is flawed.
The link is to an online Version of Record before inclusion in an issue that's dated October 2023 .. it's rather early to be claiming this is an article widely accepted by the archaelogical community.
Danny Hilman Natawidjaja writes articles such as this every few years, they aren't highly regarded but they are on record, the fact of being published in no way translates to "having passed peer review" beyond the bar of lacking obvious typos.
His past speculations about hidden chambers as evidence of human activity are generally considered as possible evidence of voids most likely related to chambers and tubes in an ancient volcanic site - which a great many remnant volcanoes have.