Junk playgrounds are not a new idea. Check out this 70's era short film featuring Lady Allen of Hurtwood, a legend in the adventure play movement. Hear her explain, in her own words and without apology, the 'what' and 'why' of adventure play.
Perhaps Lady Allen's greatest legacy is expanding adventure play opportunities to children at all levels of ability. The language in this film is dated, but the ideas still seem ahead of their time.
Enjoy!