File:Q2.png Lower Mines is first level of Unit 1 of Ground Zero. You begin the level in an unstable cave half filled with lava, which your drop pod has narrowly missed crashing into. Almost immediately, you will have to eliminate two flyers waiting in ambush for you. To get out of the cavern, you must blast a red crystal in one corner. It explodes to reveal a hallway dug through the rock, granting access to the next areas of the map. Proceed through the facility and mine halls to the Thaelite Mines.