Gyémántpiramis (1985)

A space-shift lands on an unknown planet, soon its crew been slaughtered by aliens, but the last man alive manage to air an emergency call. Later a group of scientists arrives with the very same result. A rescue spacecraft who received that call send a cabin down with their captain and other few members who find some survivors apart from the many dead hunted down by alien machines. The captain interrogates the scientists who come up with a strange story.