Thread: 70's movie about town under invisible shield

maybe The Bubble, although it's 60s rather than 70s http://www.imdb.com/title/tt0060396/

IN the Italian-financed, American-filmed I PREDATORI DI ATLANTIDE/RAIDERS OF ATLANTIS, shot in 1982, there's a whole population living under a g;ass-like shield and all assortments of people trying to escape vandlas in bad nakeup...check it out: http://www.imdb.com/title/tt0086135/

In the 1976 film " Logan's Run " with Michael York & Jenny Agutter they lived under a domed city - but they didn't dig their way out , they eventually followed a tunnel ( through "Box's" icy realm ) to the outside real world .

I believe this is the one I'm thinking of. Thank you! He asked us, "Be you angels?" and we said, "NAY, we are but men," ROCK!