Here's a Pre-Roman map of the Western Mediterranean! I've seen this before but I forgot to post it here, might as well do it now as it could prove to be of some use, or interest some people. I wasn't sure which research thread to put this in exactly since it encompasses not just the Celts but several others. I'll just leave it here since they compose half of the map.
Europa Occidentalis, circa 300 BC (?)
Europa Occidentalis, circa 300 BC (?)