Mount Nevera

Mount Nevera is seen in Ace Combat X: Skies of Deception. The surrounding area around the jamming faculities is extremely mountainious and deep valleys. Just to the north, is Aurelian Capital City, Griswall.

Leasath - Aurelia War
This Jamming Facility is responsible for the disruption of any Leasath Offensives or Counter-Offensives, making it a key part of the Auerilian Defense Line. Leasath Forces saw this Mountain Range as a vital tactical point and set-up an array of highly sensitive jammers at the top of the largest Mountain, Mount. Nevera.

Sources

Ace Combat X: Skies of Deception (the game)

Official Ace Combat X Website by "Project Aces" -http://www.acecombat.jp/ace-x/index.htm