- "The Killers. What are they doing here? It looks like they're trying to capture the Tallneck."
This Tallneck is located in the eastern Sundom, almost due north of the Tallneck in Copper Deeps. However, when Aloy arrives at the site, she finds that Eclipse troops are already trying to override the Tallneck for their own purposes. Additionally, a Corruptor patrols the area.
Aloy must fight her way through a number of the Eclipse in order to jump onto the Tallneck's back. Upon reaching its head and overriding it, she gains access to a northeastern map of the Sundom. The energy blast generated as she rappels down will kill the remaining Eclipse, as well as the Corruptor.
The following datapoints are obtained automatically during this quest and cannot be missed.