Update: No. Not Atlantis. The lines came from Google’s sonar equipment. Drats.

The Sun:

THIS is the amazing image which could show the fabled sunken city of Atlantis.
It shows a perfect rectangle the size of Wales lying on the bed of the Atlantic Ocean nearly 3½ miles down.

A host of criss-crossing lines, looking like a map of a vast metropolis, are enclosed by the boundary.