Indeed, something along those lines was announced just the day before yesterday: "Waterlogged deposits at the archaeological site of Kalambo Falls, Zambia, dat

Indeed, something along those lines was announced just the day before yesterday: "Waterlogged deposits at the archaeological site of Kalambo Falls, Zambia, dated by luminescence to at least 476 ± 23 kyr ago (ka), preserved two interlocking logs joined transversely by an intentionally cut notch. " https://www.nature.com/articles/s41586-023-06557-9 https://www.nature.com/articles/s41586-023-06557-9