What was the film that had a mummy which was really an alien?

Question

A black tar like goo that is corrosive to human skin. It oozes from the mummy's remains.
At the end of the film, the mummy finds it's spaceship and leaves.

Answer 1

Yes, that would be the 1982 film 'Time Walker' which starred Ben Murphy. You've gotta love vintage horror, eh?

Answer 2

Is it Time Walker? I did a search on imdb.com for the keywords "mummy" and "alien" and there were only a few listed, and this sounds the closest to what you said... but if it isn't it, you can search for just "mummy" and see if you can narrow it down with the blue words on the left... Good luck!

http://www.imdb.com/keyword/mummy/alien/