4-2 is the Battle Map owned by EIC and is often a high traffic area of enemy players. There are no aliens or ore found here, but there are bonus boxes and booty chests with x1.5 the content. If you are shot upon being in this map, you cannot jump a portal and there is no demilitarized zone.
Try not to be AFK when you are located on this map. If you do get attacked, your best option is to use an EMP, cloak yourself, then run.