“(T)he timeframe likely means that the tools were made by extinct human species Homo heidelbergensis, usually considered the last common ancestor of Neanderthals and modern humans. And it means the region was inhabited by humans at a time that Central Europe's harsh climate would have required significant physical and cultural adjustment.”

https://www.sciencealert.com/500000-year-old-signs-of-extinct-human-species-found-in-poland-cave