try looking in the "our fake history" podcast feed

Did they have writing? Good chance they have interesting history, but never wrote it down or left much record.

it's not available online, you have to visit the caves they lived in and read directly from the wall paintings and writings

Sure. https://image.nostr.build/f32631026e999aa6948eff87a1985108f41504762026798e6be7fa6a6d8edcfa.jpg