So-called truth-seekers have long searched for the mythical city, which was first written about by philosopher Plato.
Some claim it was a real place and was once the ruling power of the world before a natural disaster sank the entire island into the sea.
And renowned UFO hunters Blake and Brett Cousins believe they could have finally found it, using Google Earth.
In a video posted to their YouTube channel thirdphaseofmoon, a mysterious structure can be seen off the Alaskan island of Chicagof, US.
“Are these pyramids found underneath the water?” Blake asks.
“An unusual structure has been found on Google Earth.
“Some people might claim this is Atlantis”
“Right now we’re trying to work out what this is.
“It almost looks like it’s in the same pattern as the Pyramids of Giza.
“Is this some sort of lost civilisation off the coast of Alaska?”
Blake then notices what appears to be tracks heading towards the structure.
“What are these tracks leading to this area underneath the Pacific Ocean?” he asks.
“Is this some kind of ancient road?
The city hidden 130 feet underwater, was once Shi Cheng in China
“Some people might claim this is Atlantis.”
More than 15,000 people have seen the clip since it was posted yesterday.
“Google Earth images almost look like they’ve had things scrubbed out of the images – cover up?” one asked.
Another wrote: “The pyramids have dimensions. Good discovery.”
A third suggested it wasn’t Atlantis at all, but in fact the mythical continent of Lemuria.