Thana Shoo, aka Thana Soo
Name of the planet where the Old Saresii (First Age of Knowledge ) and the Seenians commenced genetic breeding programs and created a number of sentient species in the process.
Thana Shoo is also the mythical home planet of the Dai Than and the name for a large asteroid like mass that once was part of the planet.
The official Dai Than story/ legends is that the Y'All destroyed Thana Shoo and forced the Dai into a nomadic existence, but the truth is buried in the "Unspoken Past " and the details are guarded by the Pale Ones (A Dai Priest Cast that remains on Thana Shoo)
The real reason why Thana Shoo was destroyed is not known but several alternate theories exist. Such as the Dark Ones destroying the planet or the Dai doing the deed to destroy the fact that they were cloned and related to the Oghr.
Nak-Thana Shoo is a piece of planet about 700 kilometers wide by 850 km long and 880 km deep. It has an asymmetric wedge shape character and on its surface is the only piece of Dai Than Architecture - a stone amphitheater with arena.
The Temple of the Pale ones is underneath that amphitheater.
(Despite the Dai Legend it is not Dai Architecture but much older and belongs to a lost civilization that was on the Planet long before the Saresii or the Seenians utilized the planet)