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Geology and Volcanology Interpretive Hike in Mammoth with Tess Irving-Ruffing – 7/10/2021

July 10, 2021 from 10:00 am - 11:30 am

Join Tess Irving-Ruffing on a hike around Horseshoe Lake and learn more about the geologic history of the Lakes Basin and of Mammoth Mountain. You will learn about the basics of the formation of the Sierra Nevada Range, the history of local volcanic activity in the area, and other interesting geological facts that continue to impact the local natural and human environments.

  • Where: Horseshoe Lake (Mammoth Lakes) (meet at the visitor’s sign)
  • When: start 10:00am (roughly 1-1.5 hrs)
  • The Hike: 1.7 mi around Horseshoe Lake. 114ft elevation change


We are no longer accepting RSVPs for this event, we have reached our limit. Thanks! Tess will be giving this hike twice more, Saturday, August 7th, and Friday, September 3rd.


About Tess:Tess grew up on the sunny beaches of San Diego. She attended college at UC Santa Barbara  where she studied Physical Geography. She has a deep love for the ocean and initially thought she could never leave it. But once she stood at the top of the Mammoth Crest and looked west at the vast, breathtaking country, the Eastside had stolen her heart. Tess continues to be awestruck and humbled by the Sierra Nevada range. She has a passion to preserve the lands that have been so healing for her and is excited to do so with the Friends of the Inyo. In her free time Tess enjoys snowboarding, running, climbing, hiking and shooting pool at the local brewery.






***This interpretive hike is generously supported by the Town of Mammoth Lakes, Measure U Funding, and Mammoth Lakes Recreation.***


July 10, 2021
10:00 am - 11:30 am
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