Monday - Saturday
6/18/2016 - 9/03/2016
Saturdays
6/18/2016 - 9/03/2016
Tuesday & Thursday
6/21/2016 - 9/01/2016
Parent & Child nature series
Best suited for ages 1-4
10/10/2016 - 12/12/2016

Eagles, Hawks, & Owls

Learn all about raptors in this close-up encounter with our resident, non-releasable birds of prey the Golden Eagle, Great Horned Owl, and Red-tailed Hawk. Visitors of all ages will enjoy this one-hour program!

$10 suggested donation per family / free for members.

Rain or shine!


6/16/2014 - 8/30/2014
Hallam Lake
4PM Monday - Friday
2PM Saturday
Daily
6/18/2016 - 9/05/2016
Daily
6/18/2016 - 9/05/2016
Daily
6/18/2016 - 9/05/2016
Daily
6/18/2016 - 9/05/2016
Daily
6/18/2016 - 9/05/2016
Daily
6/30/2016 - 9/30/2016

Maroon Bells Programs

10:15am AND 1:15pm Crater Lake Hike

3.6 miles round trip, 500 ft. elevation gain
Join a naturalist for a one-way hike to Crater Lake. This one-hour hike focuses on the flora, fauna, and geology along the trail.

10:15am AND 1:15pm Landmarks in Time Walk
Walk along Maroon Lake for 45 minutes with a naturalist. Investigate the history of this geologic wonder and ecological paradise.
 
All programs meet at the Maroon Information Center (MIC) at Maroon Lake
Courtesy of the U.S. Forest Service
Daily, free
6/16/2012 - 9/03/2012
Morning Birding
  view dates
Rebecca Weiss
8/30/2016
Rebecca Weiss
9/06/2016
Rebecca Weiss
9/20/2016
Rebecca Weiss
9/27/2016
North Star Programs
  view dates
Partnership with Pitkin County Open Space & Trails
9/15/2016
Partnership with Pitkin County Open Space & Trails
9/27/2016
Partnership with Pitkin County Open Space & Trails
9/30/2016
Partnership with Pitkin County Open Space & Trails
10/05/2016
Parent & Child nature series
Best suited for ages 1-4
10/10/2016 - 12/12/2016
Wildflowers on Aspen Mountain

Aspen Mountain Walk

Ride the gondola to the summit of Aspen Mountain and enjoy a naturalist-guided walk surrounded by inspiring views. These 45-minutes-walks are offered EVERY HOUR between 11 am and 3 pm.

No reservations necessary. Courtesy of the Aspen Skiing Company with the purchase of a gondola pass.

Meet every day atop of Aspen Mountain at the ACES Information Station.
11am, 12pm, 1pm, 2pm, and 3pm
Daily, Free

6/16/2012 - 9/03/2012
Call for details
Tel: 970.925.9157
Fax: 970.925.4819
aces@aspennature.org
11247 Castle Creek Road
Aspen, CO 81611

Monday - Friday 9AM - 5PM
Saturday 9AM - 1PM
Closed 5/30, 7/4, 9/5
Tel: 970.927.6760
Fax: 970.927.6703
aces@aspennature.org
2001 Hooks Spur Road

Basalt, CO 81621

Monday - Saturday 9AM - 5PM
Closed 5/30, 7/4, 9/5
Tel: 970.925.5756
Fax: 970.925.4819
aces@aspennature.org
100 Puppy Smith Street
Aspen, CO 81611

Morning Birding | August 23, 2016

Tuesday, August 23, 2016, 7:00AM - 10:00AM
Weather: mostly sunny, then mostly cloudy
Location: Hallam Lake and North Star Nature Preserve


Morning Birding at Rock Bottom Ranch | August 16, 2016

Tuesday, August 16, 2016, 7:00AM - 10:00AM
Weather: mostly cloudy
Location: Rock Bottom Ranch


North Star Birding: The South Side of the River | August 11, 2016

Thursday, August 11, 2016, 7:30AM - 9:30AM
Weather: mostly sunny
Location: North Star


Astronomy Night | August

ACES invites you to Hallam Lake this Summer to look up and learn about the night sky! Each evening starts with a 15-minute lesson covering basic astronomy concepts such as life-cycle of a star, reasons for meteor showers, what planets might be visible in the summer, or how phases of the moon work. After the mini lecture we will gather outside for the stargazing portion of the evening for about 30 minutes. Local astronomy enthusiasts, Anna, Ben or Olivia, will be on-hand to guide you through the phenomena of the Summer night sky. 

Please RSVP - each evening is limited to 50 people. This is the last Astronomy Night of the Summer Astronomy Series. We are working on Fall and Winter dates - check back for more information. The evening begins with basic astronomy concepts then focuses on a different specific night sky occurrence before going outside for about 30 minutes.

$5 suggested donation / free for members

Please walk, bike, bus, or carpool to Hallam Lake as parking is very limited.

8/22/2016

8:30PM
Hallam Lake
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