Dwarves and Mordor

[Maerbenn]

Originally Posted by Elu Ancalime

I read somewhere(sorry) that the only passes were the Cirith Gorgor, of course, the Morgul Pass/Road and the Cirith Ungol.

According to the maps J.R.R. Tolkien himself drew, and reproduced in The Treason of Isengard and The War of the Ring, there were at least four other passes.
Two passes were located in the Ered Lithui; one to the northwest of Barad-dûr and the other to the northeast.
There were also two passes in the Ephel Duath; one at the juncture where the Poros emits from the mountains, and another to the south; the Narg(h)il Pass.