Adlantis was imagined by Ignatius Donnelly to be another form of Atlantis. He notes that the first inhabitants of Arabia were known as Adites (Pt. IV Chap1). 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 does claim that Noah was allowed by God to warn the people of Ad of the impending Deluge.
A short discussion paper in Atlantisforschung mentions that the Ad people are referred to 14 times in the Qur’an and attributes the first identification of the Ad people as Atlanteans to Uwe Topper in 1977, nearly a century after Donnelly(a)!
The lost city of Ubar, also known as ‘Iram of the Pillars’, was discovered using satellite imagery in 1992 in southern Oman. The city had been sought after by Lawrence of Arabia and referred to by him as the ‘Atlantis of the Sands’, a name that has stuck. Its discovery prompted speculation that this was the city of the people of Ad mentioned in the Qur’an. An article by Harun Yahya discusses this idea from an Islamic viewpoint(b).
The location of Ubar has centred on the ancient Bedouin site of Shisr in the Dhofar province of Oman, but, as usual, there is controversy about this identification(c).