Join us for an outdoor family program designed for children 6 and older, though all ages are welcome. We will explore the fascinating world of mining history and geology in Nederland, beginning with a hike at Mud Lake. Families will take part in activities such as erosion control, building the Flatirons, and matching minerals with their commercial uses. After our outdoor exploration, we will head to the Nederland Mining Museum to learn more about the mining process and experience the thrill of gold panning. This program blends hands-on activities with history and science to foster a love for nature, geology, and local heritage in a fun, interactive setting. Registration required. Register .tribe-events-c-subscribe-dropdown{display:none;}

Join volunteer naturalists for an art program in nature! Volunteers will provide limited guidance in creating one or more drawings that capture elements of the natural world found at Hall Ranch. They will demonstrate how thumbnail sketches on a single page can create a coherent composition and share examples from well-known nature artists, such as Linda Miller Feltner and John Muir Laws, for inspiration. The program provides ample time to create a composition of your choice. No experience is necessary. All supplies are provided. Registration required. Register .tribe-events-c-subscribe-dropdown{display:none;}

Join the Boulder Mountainbike Alliance and Boulder County Parks & Open Space for a morning of riding the beginner and kid friendly trails at Heil Valley Ranch. This event will have mini-skills clinics, route suggestions, bike decorating materials, and educational information. This event is recommended for families with kids ages 3 to 10. Free loaner kids' mountain bikes will be available, or you can bring your own mountain bike and helmet. Guided rides with Boulder Mountainbike Alliance for all ages start at 9:30 and depart every half hour. Come anytime between 9 a.m. to noon for bike decorating and independent exploration of the trails. Children must be accompanied by an adult. Registration required. Register

What's better than an early morning fall hike? An early morning fall hike followed by pancakes! Join us for a morning hike around the lake to welcome the season. Look for signs of fall in the trees and on the ground, breathe in the crisp air, and take in the views. After your hike, join us at the shelter for some pancakes with fruit. Hike a half-mile, a mile, or more, or skip the hike and relax with us at the shelter. Hiking and pancake eating are not required but are encouraged. Registration for most programs begins on the 20th of the month before the event. Registration required. Register .tribe-events-c-subscribe-dropdown{display:none;}

Join volunteer naturalists on a mostly flat, 3-mile, out-and-back hike to the aspen groves at Caribou Ranch. While resting among the trees, we will practice mindful observation. Learn what we have discovered about aspens, mindfulness, and the natural world, and what remains unknown. We'll take time to reflect together on what we have observed and what we can still learn from nature. Registration for most programs begins on the 20th of the month before the event. Registration required. Register .tribe-events-c-subscribe-dropdown{display:none;}

Corvids, the Genus Corvus, thrive in human-dominated environments and are familiar to almost everyone in Boulder County. You’ve undoubtedly seen these loud social birds soaring above the trees, cawing at your window, or even picking through the trash. In this class, you’ll learn about how they inspire mythology, how they interact with humans, and how they socialize within flocks and family groups. Registration for most programs begins on the 20th of the month before the event. Registration required. Register .tribe-events-c-subscribe-dropdown{display:none;}

Discover the fascinating geology of the Colorado Front Range and Sandstone Ranch. Join us for a 1-mile loop as we explore the tales told by the rocks formed from ancient dunes and beaches, shallow oceans and estuaries full of sea life, and a time of glaciers. Registration for most programs begins on the 20th of the month before the event. Registration required. Register .tribe-events-c-subscribe-dropdown{display:none;}

Join our volunteer naturalists for an easy-paced hike. Open to seniors 60 and older. Explore the stunning colors that the change of seasons brings to Mud Lake. We'll go on a 1-mile leisurely walk around the lake in search of the aspen trees that change colors from green to vibrant shades of yellow and orange. We'll discuss the fall season and all the changes it brings. Registration for most programs begins on the 20th of the month before the event. Registration required. Register .tribe-events-c-subscribe-dropdown{display:none;}

Create your fishing dream team of one senior and one junior angler and come enjoy a beautiful fall morning fishing together for prizes and fun. Participants need one senior, 65 or older, and one junior, 15 or younger, to fish together as a team. Prizes will be awarded to the team that catches the heaviest trout, has the largest age difference, and are first to catch the limit. Drop by anytime between 9 a.m.-noon. The pond is stocked with rainbow trout; artificial and live bait are permitted. Bring your own fishing gear and lawn chairs for seating. Seniors must have a valid Colorado fishing license. * Please note, the wheelchair accessible fishing pier at Wally Toevs Pond is closed until further notice due to structural issues. Unfortunately, there is no wheelchair access to the shoreline for fishing at this time. We apologize for any inconvenience this may cause. Registration is not required for this activity, but you can still sign up to be notified in case the event is unexpectedly canceled. Sign Up .tribe-events-c-subscribe-dropdown{display:none;}

Celebrate Halloween with a fun, hands-on program about the flying creatures of All Hallows’ Eve. Discover how owls glide silently through the night, learn the truth about misunderstood bats, and explore the mysteries of ravens and crows. With games, activities, and a dash of spooky storytelling, this program will delight, educate, and maybe give you a little fright. Registration for most programs begins on the 20th of the month before the event. Registration required. Register .tribe-events-c-subscribe-dropdown{display:none;}

We're excited to host our next Birding Big Sit at Walden Ponds Wildlife Habitat! This inclusive trailhead event allows park users to both stand and sit to watch birds. Spotting scope and optics will be available to borrow and use. This is a drop-in event for anyone who wants to see birds. All ages and skill levels are welcome. We will be near the boardwalk by Cottonwood Marsh. Registration for most programs begins on the 20th of the month before the event. Registration is not required for this activity, but you can still sign up to be notified in case the event is unexpectedly canceled. Sign Up .tribe-events-c-subscribe-dropdown{display:none;}