A majority of people will know of Atlantis. It is a Greek, fictional island, misregarded as oral history. Atlantis is mentioned in Plato's works Timaeus and Critias and is placed in the Atlantic Ocean.
Then, I recently learned of Mu. Mu was thought to be located in the Atlantic Ocean. It was believed to belong to the Egyptians and Mesoamericans before Mu was lost.
I thought lost continents were only in Greek stories, but if you find it somewhere else, it will be in more.
Which cultures/mythologies have a lost continent/advanced civilization story?