The Phantom Empire
Starring Ross Hagen, Jeffrey Combs, Dawn Wildsmith, Robert Quarry, Susan Stokey, Sybil Danning, Michelle Bauer, Russ Tamblyn, Michael Sonye, Victoria Alexander
It's a action & adventure and fantasy movie, and has a rating of 4.2 out of 10 from Imdb which is fairly low for this kind of movie.
Watch it here
Not found streaming from Austria.