Luna Peak is the highest mountain in the Picket Range,[3] an extremely rugged subrange of the North Cascades in the American state of Washington.

It requires strenuous off-trail hiking including bushwhacking and tricky route-finding, but offers the promise of solitude, as the peak is rarely climbed.

Geological events occurring many years ago created the diverse topography and drastic elevation changes over the Cascade Range leading to the various climate differences.

[6] In addition, small fragments of the oceanic and continental lithosphere called terranes created the North Cascades about 50 million years ago.

Uplift and faulting in combination with glaciation have been the dominant processes which have created the tall peaks and deep valleys of the North Cascades area.