What Movie Is This? Sci-Fi / Horror / Late 80's or Early 90's?

I recently remembered a movie I watched years ago when I was a bit younger, which I can't for the life of me remember the name of.

My memory is very faded but this is what I remember about it:

I believe it was set on another planet, possibly a moon, maybe an asteroid. A team of people were working on the planet, perhaps mining or colonizing it. The team then discover a cave and a large platinum "box" or something inside, my memory is shady but I think I recall them having trouble getting inside the box, possibly using drilling equipment. Once inside they discover strange writings inside it and head back to base. They are then stalked by a huge scarey creature from inside and a typical movie storyline of everyone getting killed ensues.

* It was probably made in the late 80's or early 90's.

* It probably had a moderate to average size budget, possibly a bit lower than most mainstream movies, but not quite a B movie.

What Movie Is This? Sci-Fi / Horror / Late 80's or Early 90's?opera score

Your description made me think of this one:

Within the Rock (1996 TV movie)

starring Xander Berkeley, Caroline Barclay, Brian Krause, Bradford Tatum, Earl Boen, Dale Dye, Duane Whitaker

IMDB synopsis:

On a direct collision course with Earth, a large moon rapidly approaches from the outer regions of the solar system and Dr. Dana Shaw is sent along with a specialized mining crew to try to alter its course. Once upon the moon, Shaw is faced not only with a brutal time schedule and a greedy, opportunistic crew captain but also with the release of a seemingly indestructible carnivorous alien, imprisoned within the moon eons ago by a race it had been slowly decimating.

http://www.imdb.com/title/tt0118183/

QUOTATION:

Archer: It would come every year and...

Luke Harrison: What?

Archer: Havest them, drag their remains off to...

Luke Harrison: Eat them right?

Archer: Bury them... it was a carrion eater... it ate the dead. So a hundred of their soldiers sacraficed their lives, so that the smell of rotting meat would bring it out. Then they trapped it in this capsule and set it off into space. Over time, rocks attached itself to this device. This whole thing has been one giant solitary floating Alcatraz.

Cody Harrison: Yeah... well now it's time to give it the chair!

What Movie Is This? Sci-Fi / Horror / Late 80's or Early 90's?musicals opera theater

...might you be thinking of the 1985 sci-fi horror shocker, and a definate 'Alien' knock-off, entitled "Creature"??? The plot, which you describe, sounds very much similar, especially when you mentioned the hapless crew being on a moon (...in this film, the moon is called Titan, which was actually part of the name of the film's original title, "Titan Fiend")...
It sounds like the Ghosts of Mars