Aurack was an Age uncovered by the Averonese explorers working with Atrus to rebuild D'ni and locate survivors. It was an ancient, heavily-wooded Age. Many years of fallen leaves created a springy, mushy floor to the forest. It was also, as Atrus and company discovered all too late, an Age used for hunting wild, dangerous beasts—most likely in secret, behind the backs of the Guild of Maintainers. Meer, one of the Averonese explorers, was killed by one such beast in the search for survivors in the Age, after which the Age was abandoned.
The "D'ni Historical Journal" in the Myst III: Exile hint book incorrectly cites this Age as the location where Guild Master Tamon was found during Atrus' restoration efforts. The name of the Age where he and his fellow survivors were discovered is presently unknown.