The derelict spacecraft
is a crashed ship of unknown origin. It is thought
that a different
alien species inhabited this ship before the xenomorphs took over.
They seemed to be
humanoid, but standing much taller than normal humans.
When the Aliens
took over, It crashed on the planetoid of Acheron or LV-426.
The aliens laid
their EGGS in the cargo hold just below the pilot's
chamber.
(The pilot was found
fossilized with a hole in his / her chest.) This ship gave
of a signal warning
people not to enter this spacecraft.