April Nature Walk // 4.19.25

Friends of Princeton Open Space(FOPOS), founded in 1969, is a non-profit, tax-exempt organization devoted to acquiring open space in Princeton for preservation, protecting natural resources, maintaining accessibility to trails, and providing environmental education. Throughout the Princeton region, FOPOS works with groups to support efforts to preserve and protect open space and the environment.Since its founding, FOPOS has helped to establish over 1,800 acres of parkland and a network of trails that nearly encircles Princeton.  Through grants and the contributions of hundreds of people in the community, FOPOS has helped raise nearly $10 million for the purchase of land and acquisition of easements on properties that might have been bulldozed for development.  In addition to land preservation, FOPOS also leads in stewardship, from creating and maintaining hiking trails, boardwalks and footbridges, to the removal of invasive species and the replanting of native varieties.FOPOS also sponsors community programs and activities, such as nature walks and educational workshops, and advocates for governmental actions that protect our water, land, animals and plant communities. If you have an interest in spending time outdoors, enjoying nature and making a difference in the community, please contact us at info@fopos.org to get involved in trail-building and ecological restoration.

Friends of Princeton Open Space

Join FOPOS’s stewardship team for a nature walk around the preserve.

Mountain Lakes House

Join us for our April Nature Walk through the trails of the Billy Johnson Mountain Lakes Nature Preserve.Led by the <a href="https://fopos.org" title="https://fopos.org" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">Friends of Princeton Open Space</a> stewardship team, this guided walk will offer a chance to explore lush trails, vibrant spring blooms, and the sights and sounds of nature as the season comes alive. Whether you’re a seasoned hiker or a first-time visitor, it's the perfect way to enjoy the outdoors and reconnect with nature. Our stewardship team will also share insights into the history of the preserve and the ongoing land stewardship efforts that help protect this special place for future generations.Be sure to wear sturdy, weather-appropriate footwear. Feel free to bring a camera or binoculars along to help you spot and capture the beauty of wildlife as we explore.

FOPOS Land Stewardship Volunteer Day // Saturday, May 30th

FOPOS Spring Bird Walk with Winnie Hughes Spar // Saturday, June 6th

FOPOS Foraging Invasives as Stewardship: Mugwort // Sunday, June 7th

FOPOS Nature Journaling Meetup  // Monday, June 8th

FOPOS Land Stewardship Volunteer Day // Saturday, June 13th

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April Nature Walk // 4.19.25

More events from Friends of Princeton Open Space

Discover more events from Friends of Princeton Open Space, from Travel & Outdoor to other experiences you might love.

FOPOS Land Stewardship Volunteer Day // Saturday, May 30th

FOPOS Spring Bird Walk with Winnie Hughes Spar // Saturday, June 6th

FOPOS Foraging Invasives as Stewardship: Mugwort // Sunday, June 7th

FOPOS Nature Journaling Meetup // Monday, June 8th

FOPOS Land Stewardship Volunteer Day // Saturday, June 13th

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Explore all events in Princeton and filter by date, category, and more to find the perfect fit.

April Nature Walk // 4.19.25

More events from Friends of Princeton Open Space

Discover more events from Friends of Princeton Open Space, from Travel & Outdoor to other experiences you might love.

FOPOS Land Stewardship Volunteer Day // Saturday, May 30th

FOPOS Spring Bird Walk with Winnie Hughes Spar // Saturday, June 6th

FOPOS Foraging Invasives as Stewardship: Mugwort // Sunday, June 7th

FOPOS Nature Journaling Meetup // Monday, June 8th

FOPOS Land Stewardship Volunteer Day // Saturday, June 13th

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