Located at 14.6S, 62.0W, the Crystalline Crag is a large plateau in the North Direlands. Previously just barren land, in Coldeve, 20 P.Y. the plateau changed drastically, covered in charred ground and large crystal formations.
Accessed via the Resonant Portal at 14.6S 62.2W. Although not displayed in the description, is level 50+.
During the Secrets of the Apostates patch a large crater appeared near the Crystalline Crag. The Crater cannot be accessed from outside. You must complete the quest in the 130+ Crystalline Portal dungeon in order to find the way into the crater.