Still as Stones is an off-screen companion adventure in Pillars of Eternity.
In-game description[]
The pitch:
Apahuillo farmers in the Ixamitl Plains discovered a large and elaborate ring of small adra pillars in a secluded southern valley.
Though presumed to be connected to the Engwithans in some way, the pillars do not appear to be connected to any ruins. However, since the site was discovered, farmers from up to fifty miles away have gone missing, eventually discovered days or weeks later in the ring of stones, permanently petrified.
As the Apahuillo have little experience with adra pillars, they are calling upon Readcerans, Dyrwoodans, and Glanfathans for help.
The conclusion:
The trip to the Ixamitl Plains was largely uneventful, but [Companion Name] discovered a grisly sight upon arriving at the Apahuillo adra circle. Over fifty locals had become permanently petrified among the stones.
It took a few days of investigation, but [Companion Name] learned that the abductions all happened at specific times of night and in a pattern for miles around the stones. With the assistance of a Apahuillo mathematician and philosopher, [Companion Name] was able to expose the killer, an extremely powerful adragan that had been protecting the adra circle for centuries. When kith discovered the secret place, she began systematically stalking and petrifying anyone who lived within walking distance of the site.
[Companion Name] led a protracted battle against the creature with the help of locals.