All the details you want are herehttp://www.gippslandmtb.com.au/
The trails we rode arehttp://www.gippslandmtb.com.au/docs/map ... ces_Rd.pdf
From Melbourne look for the brown sign saying "Nyerimilang Park" and take the next left at the tiny little orange sign that says "MTB Park".
From Lakes it's just after Forestech TAFE and again take the turn into Bruces Track where the MTB Park sign is...
Carpark is 100m on the right along Bruces Track
The green trail heading north is pretty easy and anyone can ride it. The blues on the north side of Tin Shed Track aren't overly technical although they're pretty narrow, so newbies (Mrs Snuffy) can ride it, but it might not be so comfortable for them. Suggest heading north along Oil Bore Link Track for a cool descent (which was a very sucky climb for us). There's also a few cool little jumps and a very cool switchback descent on the eastern end of Tin Shed Track. The white circle trail on the far east is actually the Lakes Discovery Trail - it's VERY humid down there around the Log Crossing Picnic Area.
The green trail heading east from the main carpark is pretty easy, but the map isn't 100% accurate here, so it's a bit confusing. Sinkhole track is a like a mini-Spider Gully from Buxton. Not as big, but plenty of fun. Since I was riding with the Mrs I didn't get a chance to ride the black diamond Lollipop Track, but it looked cool from the trailhead. The green Discovery Trail Extension on the east of Forestech is a really easy, wide gravel shared path which is mostly downhill. If you don't like climbing singletrack, this is a nice easy way to get back to the carpark from the outer trails.
BIGGEST problem is the signage. There are no trail names at the trail heads and every single track is marked with the number 1 and a black diamond. TOTALLY befuddling! There are also no maps posted of the actual MTB park. The Mrs got a little bit distressed about the lack of signage as she got more tired. If I wasn't carrying a map and compass, it could have been bad!