There is at least 3 of these quests, they are not tracked. I’ve picked up at least two of them entirely on accident and can’t get rid of them or the annoying message it brings.
You have to go back to the map you got it on and solve it, it’s a gimmick, not a quest. There are little… small pillars. Light blue, glowy. Should be predominantly in 240ish maps.
There should be one in Elgos Main Building, Grynas Hills/Training Camp/Trails, Grand Yard/Sventimas.
Stele Heights has one too