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A giant cottonwood providing shade on the trail.

Boulder County Flora, Fauna, and People: Past, Present and Future (1720-2120)

 06/20/2026  |  10:00 AM - 12:00 PM
  Pella Crossing  |  Registration Required

Natural History - All Ages Welcome

Take a guided 3-mile walk through time at Pella Crossing as we explore Boulder County’s past, present, and future. Learn how plants, wildlife, people, and climate have shaped this landscape from 1820 to today, and what the next 100 years may bring. Discover connections between ecology and human history while experiencing the park’s diverse habitats.

Minimum Participants: 5
Maximum Participants: 25

Registration is required for this activity.


Boulder County wants to ensure that everyone has equal access to our programs, activities, and services. To request an Americans with Disability Act (ADA) accommodation, please email [email protected], or call 303-441-1386. Submit your request as early as possible, and no later than two business days before the event.

If you need help in another language, please email [email protected], or call 303-678-6277. Contact us as early as possible, and no later than three business days before the event.


Contact
Carlos Lerma
(720) 698-0694
 Participant Waiver and Photo Release

Registration Info

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Leader/Volunteer Info

John Profile Photo

John R - Volunteer Naturalist

Hi, I'm John, a nature lover, activist, and lifelong learner. I'm passionate about learning, restoring, and protecting the natural world, and I love to share this passion with others. I’ve had a wide and varied career history, most recently as an Education & Outreach Seasonal for Boulder County and as an Urban Ranger for the City of Boulder. Now in “retirement” I enjoy volunteering to continue to serve, connect, and celebrate the beauty and diversity of life with others.


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