Following an attack on Atlantis by the citizens of Skarka, Emperor Thakorr lead his fellow Atlanteans to the Antarctic Ocean to establish a new home. In the 1920s the city suffered heavy damage by explosions set by the crew of the Oracle as part of their exploratory expedition. During this incident, Princess Fen met and fell in love with a human sailor, Captain Leonard McKenzie, eventually giving birth to Prince Namor.
The people of Atlantis returned to Tha-Korr once more but soon returned to the new Atlantis established by Namor. It was believed that the Atlanteans found the city too unstable but Attuma and his barbarian horde settled in Tha-Korr.
- Often mistakenly identified as the "first Atlantis (of homo mermanus)" despite Atlantis (Kamuu) existing first.
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