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The main points of: Sounding Unstable Terrain in Peter Weir's Picnic at Hanging Rock

The film has been described as being one of the most influential Australian films of all time.

Sound is a crucial and complex part of the film.

The film examines the difference in sensibilities between European immigrants and Australian nature.

There is no apparent solution to the mystery of what happened to the missing women.

He used a range of sound effects that were not in a 'normal' soundtrack.

Sound effects can be used to simulate reality, to create illusion and to create a mood.