Follow the McCoy Glacier directly up to the col. From the col head straight down an initial steep
slope towards a snow basin, before traversing east under rock into a broad gully. Descend north-east
on rock and snow to about 1540 metres, alongside the Lyell Glacier. From here follow the south side
of the glacier to Lyell Lake.
Rangitata Col can also be reached from McCoy Col : From the col traverse a crevassed ice shelf
below the East Ridge of Mt Nicholson and follow the broad glacier to Rangitata Col.