My last little adventure in the Cook area was to go up to Mueller hut. Supposedly 3 to 4 hours up to the top of the ridge between our camp and Mt Sefton. Those times are usually about double what it takes. There are steps all the way to the Seally tarns, basically just puddles on the hill but the view to Cook, the Hooker glacier and our camp was great. I met a guy who was to camp at the hut overnight and we walked most of it together and discussed climbing and hiking. The 2nd half was more fun with no steps, just many tracks through rocks and finally patches of snow. Once on the ridge we walked along it to the big red hut. Mt Sefton has a bunch of hanging glaciers that dump snow throughout the day. I saw one as it was happening. You can hear them fron fown at the camp site.. It was a long way back down to the camp site. 500m of rocky tracks and then 500m of steps.