Paleolithic era[edit] Archaeological evidence indicates that Stone Age people lived in the Japanese archipelago during the Paleolithic period between 39,000 and 21,000 years ago.[63][64] Japan was then connected to mainland Asia by at least one land bridge, and nomadic hunter-gatherers crossed to Japan from East Asia, Siberia, and possibly Kamchatka. Flint tools and bony implements of this era have been excavated in Japan