The Hidakai Pool was an ancient hyperlane running through Herglic Space. Development of the route began around 13,000 BBY during the Kymoodon Era, after the Herglic Trade Empire joined the Galactic Republic. The route ran from Daupherm via Abregado-rae and Giju to Yag'Dhul, where it joined the Corellian Trade Spine. After 5500 BBY, the Hidakai Pool coreward of Abregado-rae became a spur of the Rimma Trade Route after Herglic, Givin and Sullustan scouts mapped and established the Rimma.