Summer naturalist, John, gives a tour on top of Aspen Mountain to some guests from afar.

Birds of prey are one of the naturalists' responsibilities. Pictured here is the ACES Golden Eagle. She was 38 years old when she passed away in 2019.

Summer naturalists, 2022, at our annual Picnic on the Preserve. This community event introduces the naturalists to our wonderful members!

The Maroon Bells during summer training. At these high elevations, we can have snow into July!

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Lead interpretive nature walks at Aspen Mountain, Snowmass, and the Maroon Bells in the White River National Forest!

Aspen Center for Environmental Studies

Recruiting for June 7th, 2027 to September 6th, 2027.

Aspen Center for Environmental Studies (ACES) is a nonprofit environmental science education organization. ACES has worked since 1968 to inspire a lifelong commitment to the earth by providing immersive programming for all ages. Our programs focus on ecological literacy, regenerative agriculture, forest and ecosystem health, land restoration, and environmental leadership.

Naturalists learn to use storytelling to explain a range of subjects, lead groups in the wilderness, impart wisdom of the natural world, and inspire a connection to the Aspen area for over 41,000 locals and visitors during the season.