Manor under the sea
650 years ago, a man called John Wallis owned a large house - the Manor of La Brecquette, at L'Etacq.
It was surrounded on two sides by a forest of oak trees. One year, waves moved up the beach and began to flood the land. The sea rose until it covered the manor, and eventually it covered the oak forest as well.
When the tide is low at St Ouen and sand has been washed away, black tree stumps, the petrified remains of the forest that once surrounded the manor, can still be seen.