Hi,
what about this one:

"Alice Springs has a new MTB event... The Bullroarer
For those familar with the Central Australian Bike Challenge, the Bullroarer is the CABC re-invented!!!
Taking place from the 18th - 24th May 2008, this event is single track heaven winding through the West McDonnell rangers.
There is 7 racing stages over 5 days with the start and finish in one central location - that's right no need for car hire or support crew assistance. Each stage ranges from a 500m hill sprint to a 90km epic. There is a mixture of fire roads, sand, some single track and many thorns.