I remember March of 1966 when the US news papers were filled with articles about sunken cities found off the coast of Peru and Chile.
Then the story died. Nothing since.
Ahhh. . .you see, the Greys conspired with humans to cover-up this discovery. . .how do I know this? Easy. The lack of proof of a cover-up is proof of how good the cover-up is.
(do I have to: /sarc)