|Ypsilon Mountain above blue hat, part of the Mummy Range in northern Colorado.|
Below is the east side of Ypsilon Mountain, with a beautiful cirque carved into biotite schist and gneiss. The alternating layers contain more or less biotite (Geological Resource Evaluation Report for RMNP).
Geology Underfoot along Colorado’s Front Range (Abbot and Cook 2012) was our guide.
|The labeled photos and illustrations were helpful.|
At the Alpine Visitor Center, we walked to the top of the hill where we caught a glimpse of the “backside” of Ypsilon, frosted with snow.
We then hiked a short distance along Tombstone Ridge via the Ute Trail. It wanders above tree line and provides views of Ypsilon from the south, was well as patterned ground and other frost features.
Frost-heave with hiker on top for scale. The Ypsilon cirque is on the far right (note banded rocks).