Wikipedia
Y'qaa
Y'qaa or Y'quaa is one of the underground realms under Mount Voormithadreth from the writings of Clark Aston Smith's Hyperborean cycle. Several of the Old Ones from the Cthulhu Mythos live there, most notably Ubbo-Sathla.
Also see Outer Gods and Elements of the Cthulhu Mythos.
Category:Cthulhu Mythos locations