Adlantis was imagined by Ignatius Donnelly to be another form of Atlantis. He notes that the first inhabitants of Arabia were known as Adites. They were apparently named after Ad who was fourth in line from Noah. Without any convincing reason Donnelly states that “these Adites were probably the people of Atlantis or Adlantis”. He also quotes an Arabic tradition that they are descended from Ad, son of Ham although this is not confirmed by the Qur’an. However, the Qur’an claims that Noah was allowed by God to warn the people of Ad of the impending Deluge.
Some suggest a connection between Ad and the lost city of Ubar, called ‘Atlantis of the Sands’ by Lawrence of Arabia. Ubar was discovered using satellite imagery in 1992 in southern Oman.