Sanctum: Soaring Glide is a challenge dungeon tucked into the northeastern Forest of Falling Stars, built around climbing and gliding across platforms with your Sealed Aniimo. Here's how to find it, clear its puzzle, and restore the Vein.
Where to Find Sanctum: Soaring Glide
Sanctum: Soaring Glide is located in the northeastern part of the Forest of Falling Stars.

Sanctum: Soaring Glide Objective
The Sanctum Challenge objective shown in-game is to reach the heart of the sanctum and restore the Vein.

In practice, that means activating the Sealed Aniimo, making your way to the heart of the Sanctum, and activating the device there to restore the Vein.
How to Clear the Soaring Glide Puzzle
The main mechanic of Soaring Glide is Twining with the Sealed Aniimo, Celestis, which lets you climb and glide across platforms to reach the heart of the Sanctum.
You can only climb walls, columns, and boxes marked with a blue up-arrow symbol.

Use a fan's wind field to be lifted continuously between platforms.
Collect chests as you explore; there are 3 in total.

Restoring the Vein and Rewards
Once you reach the end of the puzzle, touch the device at the heart of the Sanctum to complete it.

This device is officially called the Sanctum Terminus: a square-shaped core linked to the fractured Vein energy known as the Tesseract. Interacting with it restores the Vein.

Restoring the Vein rewards you with 500 Character EXP and 1 Lumin Amber.
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