Do you know if they actually arrayed themselves like this? Or is it just a symbolic representation?
As far as I understand it, very little of substance is actually known about the Picts and their culture. They built in wood, which has rotted. They left behind very little writing and no histories. We have a few names (none of them female incidentally). Practically all we do know about the Picts was recorded by the Romans and the Gaels, who hated them. “Pict” itself is the Roman term for them. We don’t even know what they called themselves. There’s talk of woad and tattoos, of wicker shields and long spears and (curiously) crossbows, but really the evidence for all that is surprisingly scant. We do know that all references to Pictavia (Pictland) and the Picts stop very suddenly in the middle of the tenth century, probably as a result of culteral subversion and conquest by the Irish.