In terms of snow equipment, we didn't bring much at all.
I contemplated taking my crampons but crampons slow down your walking pace so it would jeopardise getting up Ossa and back in time for our flight home - all it meant that there were a few slips and falls but nothing serious. Up on the cradle plateau snow shoes would have been helpful at times. Mostly your feet would sink all the way through the snow onto something solid (walking planks/rocks/shrubs) but on a few occasions we literally got swallowed up in the snow and had to crawl out. I'm not too familiar with Tasmania’s weather but I did think we were a little unlucky (or lucky whichever way you want to look at it) with the shear amount of snow on the last day - heaps!
An ice axe would have actually been handy on some of the assent of Ossa - but probably not worth hauling all the way from Ronny Creek and back for 15 minutes of use.
We did bring a snow proof emergency tent though which we didn't use but was good piece of mind.
MOST IMPORTANT WORD OF ADVICE: Bring plenty of plastic bags and ALWAYS keep a set of dry clothes. Being saturated to the skin (which we were for the last two days) is fine while you are walking but as soon as you stop you will freeze. We were pushing pretty hard though so if you are thinking of a leisurely strole along the OT you may look into trying to keep dry while hiking.
In terms of this style of hiking jwalker, yes always have a fallback plan. If you are walking with others you can never fully estimate their fitness or conditioning for this style of walking.
We had a late start on our first day (8am or so) and were a bit casual with our pace for the first few hours so the last half of the Ronny to Pelion leg was pretty full-on. We ended up getting to Pelion at last light at nearly 6pm.
The next day we were pretty sore but climbed Ossa only with small summit packs (leaving our big packs at Pelion) which was a massive help. On the summit of Ossa there was about 5m of visability and a blizzard blowing so we only spent 5min or so on the summit. Up and down Ossa from Pelion Hut took us a little under 5hrs. Pelion Hut to Windermere hut was a massive grind but we got there in the end at about 5:30pm.
Windermere to Ronny on the last day was the shortest day (by km's) but was the most full on. As soon as there was enough light to see we left and practically didn't stop until we reached Ronny; one because the snow slowed us down so much that we were pushing to get back in time for our flight and two because if we didn't go flat out we would freeze our *&^%$#@! off. We got dumped by snow and hammered by hail/blizzards. It didn't stop snowing until about 1km from the Ronny Creek carpark.
Owell thats my story. I've attached a few more pics, a couple of the first partially clear day - including the only glimpse of Ossa we had in the entire 3 days - and one of the blizzard that hit us while stepping up onto the Cradle plateau.
Paul.

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