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Join us every Friday this winter at Rock Bottom Ranch!

Our Mission

ACES' mission
is educating for
environmental responsibility.

Featured Video

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Bear Swimming at Hallam Lake

Hallam Lake, 25-acre nature preserve and visitor center, has a wide diversity of wildlife. This video, captured by our trail cams, features a black bear taking a swim in Hallam Lake.


Morning Birding Species List | January 8, 2019

Tuesday, January 8, 2019, 8AM - 11AMWeather: SunnyLocation: Hallam Lake and the West End of Aspen