A couple of pictures that might be useful for those heading out to the tower. As you can guess after the fire the marked track is not there any more, on the other hand there is now a clear view of the cliff.
From the track head straight to the obvious "tower", keeping the swamp on your right. Once you hit the first rock feature, they'll be cairns, just keep to the base of the cliff on the right.
The obvious tower :
We put a cairn on a dead tree , where we left the track, as well as an arrow on the ground. The cairn is not very visible, be look out for the black trunk and you should see it.