The original builders of this portail system had been lost in the mists of time. Legends differed, Eradus explained to Benda, as to whether they had been built by the ancient Lagom or Ardeid peoples, or some other mysterious third party. […]
“But there are other portails as well.” He did not say where. Benda was intrigued. Though his memory still failed him, he was fairly certain he’d never heard of any such thing before.
“For this reason, and for the fact that it has been discovered etched into the peak of the arch of the portail system in the Grand Lodge of the Hall of Life, the doubled form is sometimes referred to as the ‘Creation Gate.’”
Source: The Knot of Quatria