The Glass Tree is an off-screen companion adventure in Pillars of Eternity.
In-game description[ | ]
The pitch:
Legends have spread about a hidden valley in the Living Lands where fantastic creatures are born straight out of the earth and new plants sprout and bloom every day. Some claim the place is sacred to the gods themselves, where they created all kith and wilder out of the primordial elements that churn just under the surface.
Many of the tales describe a breathtaking, enormous glass tree with branches that reach across the valley and up to the clouds. They say its base is guarded by a foreboding, helmed warrior clad head to toe in glittering armor.
The conclusion:
It took three separate expeditions from the south coast of the Living Lands for [Companion Name] to reach the fabled Valley of Glass. Though the legends had been exaggerated somewhat, the reality of the valley was breathtaking. It contained flora and fauna that had never been seen in any other known part of Eora, great lumbering beasts and terrifying winged creatures that flew so high that they seemed to disappear into the clouds. And at the heart of it all was the great "glass" tree.
When [Companion Name] examined it, it became obvious that it was not made of glass at all, but a fascinating clear wood bearing transparent sap along its great trunk and branches. Though the storied helmed warrior was nowhere to be found, [Companion Name] did find a pair of glittering clear wooden gauntlets at the base of the tree. It's unclear who made them, if they were made from that tree's wood, and why they had been left there.
With a route finally charted, other explorers began arriving in the Valley of Glass, but subsequent visitors reported that the flora and fauna had started to fade and disappear. Some speculate that the arrival of outsiders was causing the magic of the valley to retreat back into the depths of Eora.