Varirata is a fantastic place for a walk and if it is as wet as last time, then you'll be in for a giggle also, especially if poor shod walkers are witnessed going back down the hill faster than they are getting up! Keep and eye and ear out for the local guides as you may see Pigs, Deers or Wallabies amongst the growth, although the group needs to tread quietly for wildlife to be seen.
Heard is another thing as you will hear Birds of Paradise amongst the tree top canopy.
Remember to wear suitable footwear, when the track is wet, it is treacherous, but when dry, its a whole load of fun. The views from the lookouts are awesome and some of the best you'll see of Moresby and surrounds. Also remember to try to keep the group together, this walk is prone to stretching out the wheat from the chaff and it is difficult in parts. The security that travel with us are there for our safety so keep that in mind. Also please check out the Smart Traveller site for updates on Security issues in PNG. Go here: http://www.smartraveller.gov.au/ for further details.
And because this walk in mainly undercover doesn't mean you might not get sunburnt, and remember your insect repellant... Talk to your fellow walkers, because there are BBQs on site for the after walk lunch, and there is an awesome waterhole to swim at on your way out of the park. And it cost K5 per person for entry into the park, and go check out the Koiari Tree House, its a renovators delight nowadays!!!