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Megalith
From Ace Combat Wiki
Megalith was an Erusian superweapon used at the end of the Usea War in Ace Combat 4: Shattered Skies. It was destroyed by Mobius 1 in the mission Megalith.
Appearance
Megalith is on an island off the southwest coast of the Usean continent, and is laid out over several miles. It consists of four main corridors. The central corridor is a giant exhaust vent leading to the central missile silo which contains a nuclear missile, which the player must fly through and destroy to complete the mission. On its sides are two longer corridors which also contain a main silo. They also contain two generators that the plaer must destroy to gain access to the five main silos. Connecting these three corridors is a fourth corridor which also runs underneath the main silos. There are also two smaller corridors on the outer edges of the island, but these only contain missile silos. The third generator is also located in the rear corridor. The two long corridors mention earlier both contain smaller silos, each equipped with a laser guidance system. These missiles are most likely used to shoot down asteroid fragments.