Cornwallalive; Lyonesse

According to the Cornish folklore, there is a city that sank into the ocean centuries ago. The legend, immortalised in the poetry of Alfred Lord Tennyson, says that the lost land of Lyonesse, located off Land's End, was engulfed by a huge tidal wave.

It was a rich land with fair-sized towns and as many as 140 churches.
Some say that it is where King Arthur fought his last battle against Mordred and others, like Thomas Mallory, claimed it was the birthplace of Iseult's lover Tristan.

Lyonesse is said to have been swallowed by the sea in a single night, never to be seen again. The catastrophe left only two survivors - a man called Trevillian and his white horse.

Since then, local fishermen have been said to have pulled up stones from the buildings of the lost city in their nets and, to this day, the bells of long-submerged churches can be heard ringing beneath the waves on still nights.