Here's a screener for the "highest altitude feature filming ever undertaken": "The Ascent" starring Vincent Spano. In it, prisoners of a P.O.W. camp during World War II plot a daring escape, but the prison's guards aren't going to let them get away with it that easily in this intense thriller.
This is a screener copy, so chances are it has subtitles that notify you of that every once in a while. Still, this is a very rare, hard to find movie that has never been released to American DVD, making this a worthwhile addition to any collector's tape collection.