Thanks to Hobart Council's Bushcare team for this post.

"Get your hands dirty and play an active part in creating a mountain bike track tailored to your needs as a rider. Catch up with old friends and enjoy a BBQ lunch at the end to celebrate your achievements.
When? Saturday 15th March 2014 @ 8:45am (for a 9:00am start) to 1pm (followed by BBQ lunch)
Where? Top section of the Tip Top Track, South Hobart (Specific location to be advised when you RSVP)
What? Playing in the dirt building new sections of mountain bike track, upgrading existing sections of track and enjoying a BBQ lunch after all the hard work is done and dusted.
What to bring? A sturdy pair of work boots (steel-cap preferred), long trousers, long-sleeved shirt, hat, drinking water, and plenty of enthusiasm for building and maintaining some sweet singletrack in the South Hobart hills.
RSVP on 6238 2886 or via email [email protected] no later than Friday the 7th of March (places are limited so get in quick)
This is the first of three track building events to be held on the upper Tip Top track. Tentative dates of Saturday the 12th of April and Saturday the 10th of May have been set. To express your interest in either of these dates let us know on the contact details above.
Spread the word, share the love of sweet singletrack and hope to see you there!"