People will find an ancient city of Atlantis

Sir Arthur Conan Doyle : writer
The novel revolves around the legend of Atlantis, mentioned as an ancient city or continent which was drowned by the sea due to divine intervention. The novel is narrated by Headley who first writes a letter to his friend Sir John Talbot. On his subsequent rescue, he completes his story giving details on his escape and how they fought off possibly the greatest danger to humanity, the Devil himself.

Conan Doyle, A., (1929) The Marakot Deep, London, John Murray