The Quest of Iranon

Eventually they reach Oonai, which Iranon is disappointed (although not surprised) to discover isn't Aira.

After Romnod's death, Iranon decides to leave Oonai and continue his search for Aira.

With the truth revealed, that Aira was merely a figment of his imagination, Iranon loses his eternal youth.

At one point Iranon says that he has "dwelt long in Olathoe in the land of Lomar",[3] a reference to the setting of Lovecraft's short story "Polaris".

This suggests that "The Quest of Iranon" takes place in the same world and era as "Polaris", that is, in a prehistoric Earth c. 24,000 BC.