Feywild equivalent
The Chimerazon was a plane parallel to Al'tehrun, and could be accessed by Plane Shift magic or areas of Fey presence powerful enough to maintain a static portal between the realms.
The Chimerazon is primarily mapped not by distance, but by time. Travel to a specific place in the Chimerazon is largely dependent on when the travel takes place within Al'tehrun. The most popular regions in this place are subject to travel at dawn and dusk, at the Court of Oresco and the Court of Vespera respectively. The Court of Palavia and Court of Avyond are also well-known but are more directly divisive, as the courts of noon and midnight respectively. Less significant locations are less reliable to travel between, or are dependent on more factors (season, weather, Astraan/Orchuun phases).
Time moves differently in the Chimerazon. For every day (Long Rest) passed, 1d4 days pass in Al'tehrun. Time moves faster when in the Chimerazon, but the exact pace is impossible to track or predict.