So for context, I've already completed the main story and all the side quests (I believe there are 28 of them).

I'm currently finishing up Rebel Camps and Outposts. At the Rebel Camp Fenrise, you can scan this "Ornamentation". Odd since I actually don't think I've been able yo scan such a thing anywhere else.

It seems to be the only one at Fenrise but as you can read from the scanning caption, "Significance Unknown".

Horizon Forbidden West Ornamentation https://imgur.com/a/Pz1T8Pj

Anyone know if this currently has a purpose? Is it teasing something later down the road, like DLC? I mean, after all, (INCOMING SPOILERS FOR REBEL CAMPS):

Throughout the game there are audio files with a "Mysterious Woman's" voice. This woman really has it in for Aloy and in scanning a Messaging Device, you find out the Mysterious Woman is named Asera and she has put a bounty on Aloy