First of all, English is not my mother tongue, so sorry about any grammar mistake. Let's begin. It's known that there is one secret chest in the optional way to the gorgons' labyrinth, that appears when we do an specific activity and we keep spirit bloom chest close. So let's think, there is one optional path to the Templar, one to the gorgons' labyrinth and another one to the final chamber. The community have discovered one of this secret chest inside the alternative path to the gorgons. So it should be one chest in each alternative path, and should be one specific activity for each alternative path that will trigger the chest's spawn. Maybe there is one chest that should remain close for each secret chest. At this point everybody can think that what I explain is reasonable, but what we are really interested in, is the location of this secret chests and the activity that triggers chests' spawn. The first alternative path starts in the area named "The trial of Kabr" and connects with "Templar's Well" seen in this video that I found in youtube ( http://www.youtube.com/watch?v=5I3-RDJPgAE ). There are a lot of little caves in the walls, that if you enter inside you'll find nothing more than a close end, for example in the minute 0:34 when the player looks down and the tittle "Templar's well" pops, just under him, to the left there is one of this caves, you can check it. So, in one of this caves or other place inside the alternative path should be the chest. Now, the trigger. The more plausible trigger that I heard is to keep the three platforms untouched before enter the VoG, no praetorian can enter inside the 3 platforms. And maybe we have to keep close the first chest that we find inside the VoG, as we do with the spirit bloom chest to take the 2nd secret chets. The 2nd alternative path it's the one that already know. The 3rd alternative path it's located in the jump puzzle area. I'm not able to find any video of it in youtube. It's really easy find the alternative way. When you arrive to the jump puzzle, instead to go to the right, keep close to the left wall, keep going close to the wall and you'll find a cave through the rocks. Just walk through the cave and you'll reach the edge, from there you can see the entrance to the last chamber where you fight Atheon and a pedestal with a broken vex teleport on it. While you are on the edge an alternative jump puzzle is activated that allows you to reach the pedestal and the Atheon chamber. Moreover, if you jump to the bottom and turn 180 degrees there is a little chamber that i'm sure it's made to offer us a secret chest.I ' ll try to make a picture of it and upload it in the comments. The most plausible location for the 3rd alternative path's chest, that i heard on the web, is under the broken vex teleport, and you ask yourself: why? because the 2nd secret chest appears under a vex structure ( http://www.youtube.com/watch?v=Yb8PBvyTK8M ---- minute 5:11) There is a discrepancy about the activity that trigger the appearance of this secret chest. In my opinion the most plausible activities are related with gorgons inside the labyrinth, because is the closest enemy before the 3rd alternative path. The possible activities are: kill 1/more gorgons or remain undetected inside the labyrinth. As you know there are two chests inside the gorgons' labyrinth. if we keep the patron we should let one chest close, but I can´t say what chest cause i do not know. In conclusion, there are 3 alternative paths, we suppose there are 3 alternative chests attached to 3 specific activities and maybe 3 chest that have to remain close. We, the community, already found one secret chest. Let's find them all, Guardians.