Bill Mollison's original permaculture farm to join others in huge NSW-Queensland koala corridor WedWednesday 7 updated Yesterday at 8:43pm WedWednesday 7 A koala sprawled across a limb just metres from a Pumpenbil farm, near The Pinnacle. ( Print text only Cancel A farm that was once owned by the father of permaculture, Bill Mollison, will join a growing movement which is setting aside land for a permanent safe koala corridor from northern New South Wales to the Queensland border. Key points: The current owner of Mr Mollison's farm will plant more than 4,000 trees on 10-hectares of the property Bangalow Koalas have planted nearly 54,000 trees since February last year for wildlife corridors