There are lots of geographical features associated with fiction, spanning the spectrum from Rockall to the Marianas trench. Does it span more than one country?
This might be a good point to suggest you re-read my earlier hints. I suppose you could eventually get to the answer via geographic elimination, but that will be boring and might take a while. You won’t get there by guessing the names of mountains that you know; I doubt if any of you know this mountain by name. So I’d suggest following the abstract connection, which I promise you is not obscure.
Feature? No. The AOTC is the name of the entire mountain. The mountain does in some broad sense have a relevant “feature” but it is one that many mountains possess. Kunlun Mountains? No.
Form of AOTC? The AOTC is [Mountain Name]. But the judges would accept an answer in a similar form to "The mountain which stood in for the Lonely Mountain in the film version of the Hobbit" Aoraki, which stood in for the Lonely Mountain in the film version of the Hobbit? No. *applause* North of the equator? No.