I remember having watched a movie, probably from the late 70's, 80's or early 90's, in which a crew of archeologists were digging up a location off planet earth. They found a set of certain ruins which had a pretty mural depicting an alien form of life... but ALAS! this mural was actually an alien who came back to life, once getting into contact with the atmosphere. The alien obviously went for breakfast taking the excavation crew one by one.
One of the movie gadgets I remember is them having some drills that worked like guns (shoot the drill bit into the wall, go boom), and actually one of the characters is killed because he or she shoots themselves in the head with that drill.
It's been like 25 years since I saw it on tv, hope you guys can help me find it.