I just went looking at my photos and found a photo looking west and south of Walled Mountain.
I found an image of the point you are likely standing but don't know its name.
So, instead I will have a guess at far out on the southern side of the Walled Mtn Plateau. Between Walled and Macs Mountain.
EDIT
Here's an image looking west/south west from Walled Mtn, showing the broad plateau that I think you are near the edge of.
If I am wring then you must be on one of those lumps further away, which I haven't looked up their names.