Lamarck, Lamarck NW, and the southern pinnacle as well, called Lamarck South on peakbagger. The next day we hit peaks 13,172' and 12,978' as well before heading back down.
From North Lakes up to the Lamarck Col, I went over the col and dropped maybe 100 feet to easier ground before traversing to the SW slope of Lamarck an N Lamarck. On descent I traversed the ridge almost back to the col, exiting down the SE face when the scree looked manageable. This was much faster and would have been a better ascent route too.
With MG, a fun walk along the plateau.
Long day hike from North Lake TH, over Lamarck Col, down Darwin Canyon to Darwin Bench, most of the way back up canyon, x-country up to Lamarck ridge, tagged several high points, finally tagged Mount Lamarck, then scrambled down the southeast ridge boulders and hiked back out to the TH.
Side trip from Lamarck after climbing Darwin.
Day hike over Lamarck Col.
With Mount Lamarck. TR