The word "Anzu" is a group term for any creature formed at the dawn of creation, not of the natural world. When the Shapers departed, the Anzu were left to fend for themselves. Some survived, some did not.
Though most references to Anzu live in folk tales and children's stories, our world does have a considerable number of pre-urgoth structures. The Sunken Garden submerged in the center of Shadowmark, The Vault of Monument Watch, and The Golden Monolith of the Mirelands possess similar architecture not associated with Shapers, humans, or urgoth, and perpetuate the myth of ancient beings from long ago.
Additional Notes and Trivia
To see the main pages that aren’t a part of the Cortex but a part of the Lore, see below: