Gift of the Ancients
The Gift of the Ancients is found at [28.4, 74.2] in a small cave above the Sunset Shore in southwestern Talador. The path to the cave is marked by two unmanned fishing boats in the water next to a trail leading uphill. In the cave, three statues are facing away from a center dais. Interact with each statue twice to have them face the center. Once all three statues are pointing inward, beams of light come out from the statue's heads to the center dais, and the Gift of the Ancients appears. Loot the chest to acquire the 
[Signet Ring of Gehs'taal].
Tracking quest
To check whether this chest has been looted, copy and paste this command into the chat window:
/run print(C_QuestLog.IsQuestFlaggedCompleted(36829))
If a "true" appears in the chat window, this chest has been looted; "false" indicates the opposite.
Patch changes
Patch 6.0.3 (2014-10-28): Added.