And every time I set eyes on Lake Bala, particularly when its surface was churned up by the wind in winter, I remembered the story Evan the cobbler had told me, about the two headstreams of Dwy Fawr and Dwy Fach which are said to flow right through the lake, far down in its dark depths, never mingling their waters with its own. The two rivers, according to Evans, said Austerlitz, were called after the only human beings not drowned but saved from the biblical deluge in the distant past.