"The very dramatic, glacier-carved east face of Ypsilon Mountain cannot be seen by climbers as they head up the much easier to ascend west slope.

A short, steep trudge though pleasant subalpine forest from the trailhead leads to a branch to the right from the Chapin Creek Trail. Follow this branch toward the top of Mount Chapin. At best, 1.5 miles from the trailhead, this branch fades to trackless tundra where your route is a hiker’s choice, infl uenced by whether or not you are peak-bagging Mounts Chapin and Chiquita in addition to Ypsilon Mountain.

Climbing all three is easier walking but of course requires more time—and likely more effort.These three peaks buttress the south end of the Mummy Range above Fall River. Mount Ypsilon was carved by glaciers more extensively than the others. These glaciers formed on the east side of the mountains because snow was dumped there by Mounts Chapin and Chiquita are more dramatic when viewed from the east than from hikers' western approach."

--Kent Dannen, Best Hikes Rocky Mountain National Park (Falcon Guides).