Darkness Looming is one of the Version 6.6 event quests tied to the Hexenzirkel storyline, and the Aaru Village segment asks you to inspect a set of King Deshret-era mechanisms scattered around the village outskirts. The objective sounds vague in the quest log, but the task itself is a short observation puzzle that only needs the correct interaction order to clear.

Requirements before starting the Aaru study step
The mechanism study only unlocks after you have accepted the Darkness Looming event quest from the event menu and progressed past the introductory dialogue in Sumeru. Aaru Village must already be unlocked on your map, which means the Archon Quest "Golden Slumber" needs to be completed on the active account.
If the Aaru Village waypoint is not visible, the event marker will not appear at the correct location. The Treasure Compass for the Desert of Hadramaveth is not required, but it helps if you want to clean up nearby chests during the same trip.
How to find the mechanism site in Aaru Village
The investigation site sits just outside the main village pavilion, on the sand terrace overlooking the dunes. A quest icon pins the area once you have the Darkness Looming step active, and a faint Deshret-style glow marks the pillars at night and during sandstorm weather.
Step 1: Teleport to the Aaru Village waypoint and walk toward the southern edge of the settlement until the quest marker resolves into a circular search zone.

Step 2: Enter the search zone and let the on-screen prompt switch from "Investigate the area" to "Study the mechanism." Three pillars will become interactable, each carrying a small Deshret glyph at the top.
Step 3: Watch the pillars for a few seconds before touching anything. One glyph lights up first, then a second, then a third. That order is the correct activation sequence, and it is randomized per account.
Activating the mechanisms in the correct order
The puzzle resets if you interact out of order, so the observation pass matters. Once the sequence finishes its loop, approach the first pillar that glowed and press the interact button. The glyph stays lit if the input was correct. Repeat for the second and third pillars in the same order they originally pulsed.
When all three glyphs remain lit at the same time, a short cutscene plays showing a projection of Deshret-era script above the pillars. The quest tracker updates to "Report your findings," confirming the mechanism study is registered.

Reference: Aaru mechanism study at a glance
| Element | Detail |
|---|---|
| Event | Darkness Looming (Version 6.6) |
| Location | Aaru Village, southern terrace |
| Prerequisite quest | Golden Slumber (Archon Quest) completed |
| Interaction count | 3 Deshret mechanism pillars |
| Puzzle type | Observation order (Simon-style) |
| Reset on failure | Yes, no penalty |
| Completion signal | Cutscene with Deshret script, tracker updates |
How to confirm the step is complete
You will know the mechanism study has registered when the quest tracker swaps the objective text from "Study the mechanisms in Aaru" to a follow-up step pointing back to the event investigator. The three pillars also stop glowing entirely once they have been logged, which prevents accidental re-interaction.
If the tracker still shows the original objective after the cutscene plays, return to the search zone and look for a fourth interaction prompt on the ground between the pillars. Some accounts spawn an additional rubbing-style inspection point that needs one extra press before the step closes out.

Common reasons the step does not progress
Most failures come from skipping the observation phase. If you mash the interact button on the first pillar before the glyph loop finishes, the game registers an incorrect input and silently resets the puzzle. Wait for the full three-glyph pulse before touching anything.
The other frequent issue is being in co-op mode. Event investigation steps tied to single-player Archon prerequisites do not always award progress to the visiting player. Return to your own world to complete the Aaru study, then rejoin co-op afterward.
Once the report-back dialogue closes with the event investigator, the Darkness Looming quest advances to its next location, and the Aaru segment is fully closed on your account.