By using this switch the quad gate can be opened. The cage offers some protection against aliens.
After opening the gate, the telescope tube must be activated
on the dome's other side. Caution: When activating the telescope tube, stay clear of the resulting
blast as the cap must be detonated for further access.
When done, the marines may jump down into
the waste and press the telescope tube hatch, which takes about 10 seconds to retract.
Protect the emergency shutter in the HQ, once the gate is opened!