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

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
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
11247 Castle Creek Road
Aspen, CO 81611

Monday - Friday 9AM - 5PM
Saturday 9AM - 1PM
Closed Labor Day
Tel: 970.927.6760
Fax: 970.927.6703
2001 Hooks Spur Road

Basalt, CO 81621

Monday - Friday 9AM - 5PM
Closed October, 21, 2016
Tel: 970.925.5756
Fax: 970.925.4819
100 Puppy Smith Street
Aspen, CO 81611

12/12/2016 - 3/31/2017
12/12/2016 - 4/14/2017
12/12/2016 - 4/14/2017
12/12/2016 - 4/14/2017
12/19/2016 - 3/27/2017
Fridays & select Tuesdays
12/23/2016 - 4/07/2017
1/03/2017 - 3/28/2017
1/06/2017 - 4/14/2017

Ashcroft Snowshoe Tour

A must-do Aspen experience! Explore winter in Aspen on this half-day snowshoe tour in the beautiful and pristine Castle Creek Valley. Your Naturalist guide will share expertise on animal tracking, valley geology, avalanches, bird-life, winter habitats, and sub-alpine ecology. You will explore the historic Ashcroft ghost town and walk through serene spruce and fir forests and open meadows on your way to a gourmet lunch at the spectacular Pine Creek Cookhouse. Following lunch, you'll meander through peaceful aspen groves on your return to the King Cabin. 

  • Offered every day that PCCH is open at 10:30AM. Meet at the King Cabin at Ashcroft Ski Touring Center, located 11 miles up Castle Creek Road from the round-about.
  • Price* includes: 4-hour guided tour, snowshoe rental and basic instruction, Ashcroft trail pass, and lunch at Pine Creek Cookhouse (prix fixe menu, tax and tip included).
  • Tour price* with a-la-carte lunch option is available (you may order off the full Pine Creek Cookhouse lunch menu).
  • 3.5 miles round trip, tours take place on gentle terrain and are held at a leisurely pace. 
  • Shuttle service available leaving from the Wheeler Opera House at 10AM. $50/person round-trip. Reserve separetly with SnowLimo. Two-person minimum.
  • Warm boots, winter clothing, sunscreen, and water are strongly recommended.
  • Two-person minimum required to run the tour.

Reservations are required: call ACES at 970.925.5756 during open hours (Monday - Friday, 9AM - 5PM) to book. After hours please dial 0 and leave a detailed message - we will confirm your reservation by 9AM the next business day. 48-hours notice recommended for tour reservations.

*Prices TBD by November 15, 2016

Tours made possible through a partnership between ACES, Ashcroft Ski Touring/Pine Creek Cookhouse, and the White River National Forest (USFS).

Ages: All Ages
12/12/2016 - 3/31/2017

Ashcroft, Castle Creek Valley

ACES Après: Holiday Open House

Join us at Hallam Lake in the heart of Aspen to enjoy ACES during the holidays! Our holiday open house features guided snowshoe tours around the preserve, crafts for kids, hot drinks, wine, snacks and more! Don't miss the early evening "air show" of waterfowl coming to spend the night at Hallam Lake, explore the center, and learn about ACES while you enjoy the warmth of a small bonfire, the pleasure of good company, and the beautiful setting of Hallam Lake!

This event is part of ACRA's 12 Days of Aspen and is free and open to the public. Please RSVP below.


3:30PM - 6:30PM
Hallam Lake

Rock Bottom Ranch Holiday Hams

Enjoy bone-in cured and smoked hams from Rock Bottom Ranch this holiday season! Our heritage-breed, pasture-raised pigs are Animal Welfare Approved, certifying they were raised to the highest animal welfare and environmental standards. Click here to learn more about our sustainably-raised pigs.

ACES members at the Bighorn Sheep ($300) level and above will enjoy early access to these sustainably-raised hams beginning November 19th. Hams will be available to the public on December 1st.

Orders must be placed with deposit by December 15, the remainder of the cost will be due at pick up.* Quantities are limited and will be sold first come, first served. 

  • $9.99 per pound + tax
  • Estimated weight: 6 - 8 pounds each (9 servings on average)
  • Estimated cost: $60 - $80 each
  • Comprehensive preparation instructions included.
  • Pickup at Rock Bottom Ranch on December 22nd or 23rd between 9AM and 4PM.
  • Pickup at Hallam Lake on December 23rd between 9AM and 4PM. 

Call or email Jason Smith with questions at 970.927.6760 or

*By placing my order and deposit for bone-in smoked ham(s), I agree to pay ACES the remaining outstanding amount for the ham(s) at pick-up.  If I fail to pay in-full and pick-up the ham(s) by 4:00PM on December 23, 2015, I will forego my deposit and ACES will retain the ham(s). 
Parent & Child nature series
Best suited for ages 1-4
4/05/2017 - 5/24/2017

Owl Night

Chilly winter evenings are ideal for owling adventures! Join us for a magical nighttime stroll at Rock Bottom Ranch to look, listen, and learn about these amazing nocturnal hunters. Before heading out on the preserve, participants will meet ACES’ resident Great Horned Owl, hear a favorite owling story, and learn about the adaptations that enable owls to be masters of the night sky!
Please dress warmly! Hot beverages provided.

Free for members.
Non-members suggested donation $5/person or $10/family.
Please RSVP below. 

Rock Bottom Ranch
6PM - 7PM
Syndicate contentSyndicate content