The Mulgum River, Nimbin, Australia; Far Northern New South Wales, an area known as The Northern Rivers. August 2005. Sandra Joran. Sandra added stitching of her own mandala art into the fabric. The town of Nimbin is sister city to Woodstock in USA.mans collaborates with others so the fabric will touch a river in the north, south, east and west regions of Canada. The rock formations are created each summer by an artist John Cepreno.