Via the Marshall Glacier.

Cross the Dart Glacier below the icefall to the scree slopes south of the East Ridge. These give access to the Marshall Glacier which is followed up to the base of a prominent rock face on the south side of the East Ridge about 200m below the peak. From this point the ridge is followed, with two chimneys and a short snow ridge before the summit. Alternatively the snow of the South Ridge can be reached by continuing to the top of the Marshall Glacier. The climb would take six to seven hours from Cascade Saddle.