Map H36 and I36
Grade 5 1500 metres
One reasonably tough day of six or seven hours. Take a helicopter from Mt Cook airport to a heliski landing site just north of the Burnett Glacier on the south-east corner of the Malte Brun Range. (For the hardy there is a route up onto the Burnett Glacier from the valley floor.) Skin across to and up the Lecky Glacier, through an easy col (2450 metres, grid ref 902308) to descend the Reay Glacier.
Staying true right of the creek lower down, a right turn up the next creek leads to a ridge separating the Langdale and Walpole glaciers at 1900 metres (grid ref 884330) then ski down to the Beetham crag area for the night. With a bit more effort you could go up the Walpole to about 2350 and down the Langdale to get to Beetham.