Memory 5 - p. 2 | Sequence 4 - The Uncivil War AC: Revelations Guide
Last update: 11 May 2016
Once you get to its top, move further to the right. A long tunnel will lead you to the zipline hanging from the pole. Use it to slide down and run further ahead.
Walk behind the waterfall and climb on the high wall. Jump between further constructions until you'll reach the wooden scaffolding, which starts collapsing after a while.
After the cinematic ends, use the zipline to slide down to the other side of the cavern.
Next to your landing place you'll find a point where you can jump down into the water. Do it and then run along the edge of the abyss.
Pass the damaged bridge and climb the high wall. Head to the right. After a while you'll reach the wooden scaffolding. If you can't climb it, try to move to the right a bit.
Climb to its top and prepare for another zipline slide. You'll get to the small room with boxes.
Once you get there, use the Eagle Sense and look for the passage. It is hidden on the right side of the room.
Go inside. On the other side you'll find Altair's key you're looking for. Grab it to end the memory.