Right , go on Mars to the valley of the kings and go to the portal , look behind it and you'll find a vex totem of sorts , I thought nothing of it until I looked behind it and found another another and it went on like a trail of land marks and I thought it was a route and I thought how the black garden exist in another dimension of sorts but in other dimensions it's still the world just different stuff , but then I looked up and saw what looks a lot like
[spoiler]the giant mountain in the black garden![/spoiler]
Are they somehow linked? It is most likely a coincidence but go check it out for yourself and maybe this rock has something to do with the black garden
I'm uploading a video now and it details all about it and how I found it so
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If you got to that portal at the Valley on Patrol and watch a player running the Black Garden Quest go through it when it is active you will actually still be able to see their tag pop up all the way below the map/area opposite from the portal's location. Almost like if you stood right at the portal's base and were facing it, turned at about a 130^ angle to your left and just looked down you would be able to see it. I'm sure that lore-wise the Garden would be in its own private slice of time and space, but visually(based on the backgound) it appears to be either on the opposite side of that mountain you mentioned or rather below it.