The Great Pine
One of three anchor points connecting the Material Plane to the Feywild and Shadowfell, located in the northern mountains.
The Fey Eladrin revealed this location when showing the party the portal network beneath the Great Tree. The scrying pool displayed dense forest, snow-covered ground, cliffs, and dim overcast skies.
The Shadar-kai spirit Trogeth mentioned the Pine as one of two other portal sites attempted before the Great Tree - both abandoned due to their dangers.
Danger still exists in the Feywild near the Pine, the Eladrin warned. Outside their camps, no guarantees.