Sunrise light on a grove of tufa towers emerging from the water of Mono Lake with soft green and dusty-red wild grasses in the foreground, Canada geese in the shallow water with reflections of the rocky towers, and desert hills in the distance.

Refreshing ‘Ologists: Sierra Nevada glaciers

This post was written by Grace Aleman, 2015 Information Center & Bookstore Assistant and 2016 Mono Lake Intern.

Much of Yosemite National Park’s most iconic landforms, such as the granite cliffs of Yosemite Valley and the rounded domes of Tuolumne Meadows, were shaped by glaciers. These glaciers were ubiquitous to the Sierra Nevada landscape for millions of years. More recently, however, we’re starting to see these glaciers vanish due to climate change.

Photo courtesy of the National Park Service.
A photograph of the Lyell Glacier taken in 1883 by Israel Russel contrasts sharply with the extent of the glacier in 2013. Photo courtesy of the National Park Service.

Join us this Wednesday, August 17 at 4:00pm in the Mono Lake Committee gallery to learn more about the fate of Sierra Nevada glaciers. Yosemite National Park geologist Greg Stock will discuss the Sierra Nevada glacial history and how modern-day climate change is affecting these glaciers.


  1. It would be nice if the presentations were filmed and placed on the website so that they would be available for folks who could not attend in person. The information in the presentations are important for MLC members at large.

  2. Hi Jim, the talks are designed to be informal and the speakers generally do not want their talks recorded or broadcast, so that’s why we don’t do that yet. But we’ve gotten a few requests for this, so perhaps next summer we can offer it!