[1] The mountain is situated 5 miles (8.0 km) south of the Canada–United States border, on the eastern side of the Cascade crest, in the Pasayten Wilderness, on land managed by the Okanogan–Wenatchee National Forest.

[3] The first ascent of the summit was made July 26, 1904, by Sledge Tatum and George E. Louden Jr., two members of the Boundary Survey group led by Edward C.

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

[8] During the Pleistocene period dating back over two million years ago, glaciation advancing and retreating repeatedly scoured the landscape leaving deposits of rock debris.

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.