The mountain was named for the zupjok, (pronounced ZOOP yok), the male progeny of a cattle bull and a female yak, and part of the ungulate names theme for several other nearby peaks that were submitted by Philip Kubik of Vancouver.

[4] 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.

As a result, the Cascade Mountains experience high precipitation, especially during the winter months in the form of snowfall.

The months July through September offer the most favorable weather for climbing Zupjok Peak.