Does anyone know how to tell if the thing we found in a POI circle is actually the interesting point? At the moment, I've been using uncollected material to mark my trail, then flying up after every every 'thingo' and seeing if the circle disappears. At first I thought it was buildings, but I found several in various POI's, and the circles didn't vanish. Then I thought it was data points, but I just found two nav beacons and an SRV wreck, but the point is still there. Surely there's be something I'm missing. Or is going back up over 2km the only way to check?