Can someone please tell me what this symbol is?

[Meznuraie]

The game doesn't tell me. Google doesn't tell me. I can't find any information whatsoever about this symbol that I'm missing, other than it's a "side activity" that doesn't appear on the map. I have been looking for hours!

https://i.imgur.com/BhOm9jC.jpg

[M4tt]

Its a mission object. Could be a templar map or james gunn cross if you have the fort sable dlc.