Courtesy of Thomas Osberg, here are some wonderful photos of the track in bygone days. http://www.finnsheep.com/THE%20UPPER%20YARRA%20WALKING%20TRACK.htm They begin at approx McVeigh’s Hotel (now under the Upper Yarra Reservoir), and finish at Walhalla. The captions are my surmise (and might not be correct). The changes in hiking costume and gear from that day to this are quite interesting!
Probably Whitelaw Hut.