It is a very simple and common route in mission 3. Go straight or going to Slug Mariner routes before destroying the first missile wall.
This is a factory kept by Rebels for Regular Army not having the exact location about the vehicles are made. It is well guarded by Supervisory Cameras and Patrol Robots. The rebels are in numbers this time. It is blocked with boxes all over, having lavafall on background (shows about vehicles are made in lava) and 2 lifts for floor elevations. After crossing 2nd floor, there is a room containing LV Armors. You can use only one of them, after destroying the first LV Armor. After crossing, facing a mechanized robot named Jupiter King.
Villeneuve Mt. System | Ronbertburg City | Käthehirt Valley | Ridge 256 | Gerhardt City | Straits of Traven | Saudi Arabia | Egypt | Rebel Supply Train | Hong Kong | New Godokin City | Rebel Siberian HQ | Rugname | Dr. Moureau's Island | Airplane Crash Site | Rebel's Secret Factory | Desert Ruins | Amadeus Mainframe Base | Corridor of Fire | New York | Osaka | Pekin | Meteor Crash Site | Garbage Island