Gruyh Skyah

An island on the very north of the Tebrith continent. No one really knows what's on there, as no one who has attempted to land on the island (which is only possible via the North coast) has returned alive.

In reality, it is guarded both by the Serene, who lives in the ocean surrounding it, and the natives, a Gruyh Skyah is there the Apex occurred and where the Paragon and the Dissident are sealed.

If someone were to make it to the island carrying either the Winterthorn, or a weapon made with a Shard, then the natives would let them pass, and they could be used to break the seal on the Apex.