Search for any shards scattered around the Frostback Basin.
Obtained by interacting with any of the 3 oculara in the region.
Interact with all 3 oculara, and collect the 12 shards revealed.
- + 500 Influence
If you have shards from the other areas, you can still open this door, however if you do this you will need to collect all the shards in the Basin in order to make progress in the following five side quests in the Forbidden Oasis: