During the errand A Curious Proposal, Dusk Mesa is the site where the Oseram opportunist, Fernund, sets up his ambush for Aloy. It is also where the Oseram trap-maker, Rasgrund, escapes to after breaking out of Sunstone Rock. He turns the mesa into a dangerous obstacle course riddled with proximity traps.
- There is a corrupted zone just north of Dusk Mesa with Scrappers and Glinthawks. You can take the same path up Dusk Mesa as you do in Sunstone Rock, but about halfway through, right after you cross the chasm a second time, you will see a rappel point. To the right of the rappel point is a pile of boulders that you can jump up to get to the top of the mesa. If you run over to the northwest side of the mesa, you will see an ancient crashed plane. You can use the plane as cover if you attack the corrupted Glinthawks.