Thanks Gotcha!
As I generally try to do, after reading what the 'way in' is I am trying to figure out how I would have known to do that trick with the pyramids. Honestly it looked like those items on the alter were being toasted, not transported, so there is no way I would have thought to do that.
PS - Still very ticked that there is a big yellow marker on my map saying that where the sentinals were is the Death Temple, and I'm told by the tree corpses that the bones are at the Death Temple, but this Death Temple is not the correct Death Temple.
I guess, this way into the Death Temple is for those (like me) that can't deal with the Death Knights, as I can't go through the front door.
I do recall a place with mirrors and all that, but have no idea where it is now. I've gone back and went to every portal I have and none lead to it. I guess what I need is the location of the mirror on the outside ... or even what map it was on.
