Kids and Adult Naturalist Field School classes are offered throughout the summer.

Programs Overview

ACES is one of the few organizations that maintains direct involvement in natural science education for children from an early age. ACES educators conduct approximately 180 field study programs each school year at Hallam Lake, Rock Bottom Ranch, and various other outdoor sites in the community. ACES' school programs serve students from both public and private schools, and make some 20,000 contacts with students every school year.

ACES' role in serving the schools of the Roaring Fork Valley and beyond has grown exponentially during the past decade. In response to economic cutbacks, ACES educators re-integrated environmental education into the public school curriculum, resulting in a specially dedicated classroom for environmental education at the Aspen Public Schools.

ACES is known for its Naturalist Field School that brings professors from all over the country each summer to teach various field courses and workshops. The varied, in-depth curriculum, which takes advantage of the diverse Rocky Mountain environment, covers a broad range of subjects from Poetry and Nature to Ornithology. Children's courses offer discovery of birds, reptiles, amphibians, wetlands, and wilderness. Adult students may receive college credit for many of ACES' Naturalist Field School Courses through the University of Northern Colorado and Colorado State University.

ACES also conducts an intensive internship program that employs and trains more than 20 young naturalists each year. This program has been recognized by the Princeton Review as one of "America's Top 100 Programs." Naturalist interns receive valuable education, training, and experience while conducting year-round interpretive programs at Hallam Lake, Aspen Mountain, Maroon Bells/Snowmass Wilderness Area, Snowmass Ski Area, and in the National Forest lands around Aspen.

During the summer, daily programs include naturalist-guided walks; eagle, hawk, and owl demonstrations; one- and two-hour programs for children; sunset beaver walks; and interpretive campground programs.

During the winter, daily programs include naturalist-guided snowshoe tours on top of Aspen Mountain, Snowmass Ski Area and at Ashcroft in the Castle Creek Valley; naturalist-guided ski tours at Snowmass; and weekly slide shows where local adventurers and biologists share tales of adventures abroad. ACES' interpretive programs on top of Aspen Mountain helped garner the prestigious Golden Eagle Award (for environmental excellence) for the Aspen Skiing Company.

Year-round, on-site naturalists are available to provide information about nature and wildlife; care for ACES' resident, non-releasable birds of prey; perform wildlife rehabilitation duties; interact with visitors; and give tours of the Hallam Lake Nature Preserve.

The Aspen Center for Environmental Studies (ACES) is a non-profit environmental education center, now with THREE locations:


ACES at Hallam Lake in Aspen
WINTER HOURS: Mon - Fri: 9am - 4:30pm
Tel: 970.925.5756
Fax: 970.925.4819
aces@aspennature.org
100 Puppy Smith St.
Aspen, CO 81611

ACES at Rock Bottom Ranch in Basalt
WINTER HOURS: Mon - Fri: 9am - 5pm
Tel: 970.927.6760
Fax: 970.927.6703
rockbottom@aspennature.org
2001 Hooks Spur Road
Basalt, CO 81621

ACES at Toklat in Castle Creek Valley
WINTER HOURS: Call for information
Tel: 970.925.9157
Fax: 970.925.4819
toklat@aspennature.org
11247 Castle Creek Road
Aspen, CO 81611

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