system
Given the following post, respond as if you're commenting on Reddit:
human
[Lord of the Rings] What are my other options to get into Mordor?

Obviously, the trying to take the Blake Gate seems like a mistake. I heard of a secret layer guarded by someone named Shelob but that sounds as risky as it is ominous. It seems to be surrounded by mountains on three side?  Do mountains not cover all of it? And what about the mountains? Could get I get some climbing gear and climb right over it?
gpt
There are no good options. You could travel along either the Northern or Southern border and skirt around the mountains to approach from the East. However, that would require that you travel through enemy held territory: The Easterlings in the North and the Haradrihm in the South. Plus, Harad is a desert, so you also have to deal with the lack of food and water. 

Climbing over the mountains is going to be difficult due to their scale. 

The country is designed to be practically impenetrable from the West.