Elderglen Isle is a liminal space, a place where the Material Plane and the Feywild intertwine. Unlike most Fey Crossings—small, hidden passages to the Feywild—this island is a natural convergence point, a place where the boundaries between worlds were never fully set.

For centuries, this connection was stable, maintained by the Wandering Circle at the island’s heart. But the veil between realms is not eternal—and there are those who seek to exploit, control, or sever it.

Long ago, before mortals mapped the seas, Elderglen Isle belonged to the Fey.

Recently, the Fey influence has begun to grow again. Some believe the old magic is waking—others fear something is trying to return.

Now the Elderglen Isle exists between the Material Plane and the Feywild, making its environment chaotic, lush, and ever-changing. The island’s climate and terrain shift subtly with the whims of the Feywild’s influence, creating a landscape of contradictions.
The isle is shrouded in ethereal mists, weaving through the tangled embrace of its overgrown forests, veiling its presence from those who sail too near. Ever elusive, it drifts upon the Sea of Constant Drift, a restless expanse where the tides themselves conspire to pull the island from place to place, ensuring that no map may hold its secret for long.

See - Isle of Newglen in respect of the "Great Sundering".