Non-dialogue short film study

Here are some good examples of non-dialogue microfilms.

Portal: No Escape (Live Action Short Film by Dan Trachtenberg) 

When a film was produced without conversations, other elements play more important role in building up the storyline and explaining everything to the viewers. In 'Portal', the filming location is a cell, nothing in it but a bed and a mirror on the wall. From the marks on the wall we know that she is being locked here for a long time. She is taking excersice everyday because she never give up the hope to escape. The music is powerful, everything contributes to transfer the ideas and keep the suspence.