Tintagel lies on the north shore of Cornwall. A few years ago archeologists found a stone with some scratching on it saying that "Artnou was born here." So, this is sold to tourists as the castle where Uther Pendragon conceived Arthur. It is a peninsula jutting out into the sea:

The land to the east: (see the waterfalls at the bottom right?)

And the land to the west:

Half an hour later, the mist rolled in, and you can almost believe this was the land of Arthur . . . .

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