Lyonesse has been also used as a setting for many modern fantasy stories. J. R. R. Tolkien drew some of his inspiration for the lost kingdom of Numenor from the legends of Lyonesse; one of the kingdom's many names in his myths is called Westernesse. While doing my research for web analytics company, I found something else.
There is evidence that in Roman times the Isles of Scilly were one large island. According to legend, Lyonesse stretched from Scilly to Land's End at the westernmost tip of Cornwall, and once had some 140 churches. Its capital was the City of Lions, located on what is now the treacherous Seven Stones reef. The names of the traditional kings of Lyonesse are derived from Welsh and Arthurian myth. It is often suggested that the tale of Lyonesse represents an extraordinary survival of folk memory of the flooding of the Isles of Scilly. Cornish people still believe strongly in a sunken forest in Mount's Bay. And there is archaeological evidence of the forest. The remains of it is evident at very low tides, where petrified tree stumps become visible.