(edited by notebene.3190)
Map Indicators
That’s to make a “personal waypoint” marker (which is an odd name, since it is not actually something you can teleport to or from). In her Rock Star collection video you will sometimes see columns of light with icons at their top. Those are squad markers; since generally she is partied with someone waiting ahead of her for those, I imagine someone else found the way and guided her so she could film the route and not have the stone missing at the end due to her having picked it up earlier.
