From Mt Chamberlin, Commodore Ridge can be traversed by alpine parties. It is a climbing rather
than a tramping route. The ridge is quite rocky, with steep descents and some narrow, exposed pinnacle
sections to sidle. The rock is variable, but reasonably good towards The Rampart. From The Rampart,
easy snow and scree lead to Pt 2006 metres. Descend east into a snow basin and saddle, from where a
scree basin to the north allows an easy approach on boulders up to the Main Divide at Mt Ambrose,
to connect with Clarkes Pass or Hokitika Saddle.
L Parry and J Douglas ( first known ascent of Mt Chamberlin, Bastion Ridge and The Rampart),