Yes, as Corvus said, I think you're referring to the Blue Peaks 'track'. This is the walk from which these forums were actually born (while trying to find information on this walk, and not being able to find it anywhere).
Hence one of the very first topics in the forums is the one about
the Blue Peaks.
The track is quite easy walking all the way, as far as physical exertion goes. However, the 'track' is
very indistinct in a few spots and I would guess that
many people lose the track at least once on their first visit to the area. There is very little in the way of landmarks, making it hard to find your way by map and compass once you get off the track. If you get fog, then you're stuffed (unless you have a GPS - I don't).
We lost the track in a big way on the way in, but we had great weather and were able to identify our position eventually, and rejoin the track. We lost it again on the way out, but I was paying more attention this time, and pulled the guys back as soon as I realised (rather than just follow along as I did on the way in). Have a look at the topic linked to above for other people's comments on how easy it is to get lost up there.
The Blue Peaks area itself if very nice once you get there. The lakes are good, but if you walk a little further, you get to Little Throne, which is even better, and beyond that, are many more lakes than you can poke a stick at, all very beautiful.
If you're at all decent at navigation, you can find your way lake-hopping from there through to Lake Nameless, or Lake Explorer, and could make a circuit of it by following Explorer Creek back out to Lake McKenzie (do
NOT attempt to cross explorer creek on the flat stretch immediately south of Lake Explorer - cross it where it is flowing over rocks -
the mud is VERY deep and VERY soft - virtually quick-mud)