How do I reach the smoke beacon in TR:DE?

I'm playing Tomb Raider: Definitive Edition on XB1. I just had the conversation with Beard Face Guy (real name unknown) about making sacrifices, and I'm supposed to reach a smoke beacon to find the crashed copilot. How do I get to the beacon from this waterfall canyon area? This is where I am:
I see there is a zipline very high up leading from the cliffs towards the smoke beacon objective. I've made my way up as high as I can on the right side of the canyon (if you're looking at the waterfall) but I don't know how to cross, or climb down and scale the other side (also note, the craggy wall in front of me, across the canyon, doesn't highlight in survival view as being climbable).
If I jump down, I can scale the roof that you see to the left of Lara, where the empty bird nest is, but that's about as high as I can get on that side of the canyon. The zipline I need to get to (I think) is a little higher and further to left, a little hard to see in the pic. Am I headed in the right direction here?
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How do you get to the smoke beacon?
Reach the mountain path located east of the main village area (you haven't had the chance to explore it either). Follow the mountain path north-east until you reach the edge. Shoot a rope arrow to make a rope bridge and use it to get to the ledge above.TOMB RAIDER #12 (PC) - Reach the Smoke Beacon
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