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Working with California university geology students in the Springerville Volcanic Field, Arizona

By California Volcano Observatory 2025 (approx.)
In this photo, a group of six people stand and sit on the edge of a lava flow made up of craggy black boulders. From left to right, a woman wearing brown pants, blue and yellow shirts, and a kerchief; a bearded man wearing jeans and a green t-shirt; a kneeling woman wearing black pants, a blue t-shirt and a khaki ballcap; a man wearing black pants, a white shirt and a gray hat; a man with a moustache wearing jeans, a green t-shirt and a gray ballcap; and a sitting man wearing khaki pants and a blue shirt.
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Detailed Description

Students and researchers in front of a 50,000-year-old lava flow. Left to right: Atzi Olivarez, Edwin Sis Figueroa, Marissa Mnich (Sonoma State University), Darrian Ellis-Hardin (San Jose State University), Jackson Kaiser (Sonoma State University), and Mark Stelten (USGS). USGS photo by Dawnika Blatter.

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Public Domain.

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