Winter/Spring

During the winter month, ACES offers a variety of daily programs at spectacular locations around Aspen. Join an ACES Naturalist for daily naturalist-guided snowshoe tours on top of Aspen Mountain, at Snowmass and at Ashcroft, or a naturalist-guided ski tour at Snowmass. On Friday evenings ACES offers snowshoe tours at Snowmass as part of Aspen/Snowmass' Valhalla nights! From January - March head down to Hallam Lake for weekly slideshow series where local adventurers share tales from abroad on Wednesday evenings and regional experts share their knowledge of relevant naturalist topics on Thursday evenings. Visit our sites, featuring free admission during open hours and staff available to answer any questions and show you around! Hallam Lake boast a plethora of education animals including our three birds of prey. Rock Bottom Ranch farmyard tours are offered Monday - Friday at 11 am.

If you have a particular adventure in mind our Hire-a-Guide program offers many options for private, custom programs with interpretive, first-aid trained guides.

Click on the programs in the menu on the left for more information when in season.