Hi folks. Looks like the relic shrine cannot be accessed after the final mission, at least the grappling hook locations seem to have disappeared. So, is there any way to try to reaccess the shrine, or is it one of those places that are only accessible during missions? I tried to climb the mountains south of the canyon and reached quite a high point. I mean the mountains on the left of the screen at 5:15 on my video (link below). I was, from that mentioned high point at the mountains, able to fly with wingsuit to the place I reached at 5:53, but couldn't go further.


https://www.youtube.com/watch?v=3TOWX79GNzM