The story goes that when King Arthur, of glorious renown, had fought his last fight and lay dead on the field of battle, his followers fled in confusion, pursued by Mordred, the rebel knight; and the course they took brought them to the extreme west of Cornwall.

“Back to the sunset-bound of Lyonnesse—

A land of old upheaven from the abyss

By fire, to sink into the abyss again;

Where fragments of forgotten peoples dwelt,

And the long mountains ended in a coast

Of ever-shifting sand, and far away

The phantom circle of a moaning sea.”

Pursuers and pursued were still pressing on when suddenly there arose a mighty tempest. The earth rocked, heaved, and was rent; and in between the two bands of warriors burst an angry flood of surging waters, swallowing up Mordred and his men before they had time to escape. But Arthur’s followers were marvellously preserved; the sea did not overtake them. Like the Israelites of old, they saw the destruction of their enemies while they themselves stood in safety on dry ground. And that ground was Scilly, all that is left of the lost land of Lyonnesse, over which the sea still swirls and eddies with unabating violence.