I think that's the one I did yesterday, if it is, rather than grappling around the cliffs, there is an opening in the cliff and you actually grapple up into the tower from underneath, as if there's no floor to the tower, just a drop, if you know what I mean.Hopefully someone can help with this. I tried to take a tower (well, get to it) you have to grapple up to it. Now I've done the first few grapples then there's 3 in quick succession moving from one side of a rock wall to another. But I can't figure out where I go from there? It looks like you swing between the cliffs and around the corner to the left possibly and jump onto a ledge but I kept falling off. Or you can get to a proper ledge on the right hand side but then can't reach anything. There's snipers above you and a zipline higher up but I couldn't figure it out, I just got pissed off and headed east instead. Anyone recognise it? There's a load of yaks and bharals knocking about the place.