The Saktimat

"They called it the Saktimat - the Stronghold. Here they began building an empire, they solidified a place for the mortals... and they chose Orre as the plane to build on." - The Queen of Whispers
The Saktimat is the result of the Cosmic Anchor, it began as a single building block and filled out from there - using the magic energy of the Si'Ull to create stability and a place to physically exist. From the Saktimat came all physical life, the Kalashtar and Star Elves took physical form and eventually so did everything else.