08/29/2026
We love celebrating conservation successes across Wisconsin—especially when there’s a Groundswell connection!
This week, Wisconsin Public Radio highlighted the grand opening of Big Cain Creek Preserve, a 30-acre natural area in Marathon County. The property was donated to North Central Conservancy Trust (NCCT) last year by longtime Groundswell supporter and former board member Mary Binkley.
For Mary and her four siblings, protecting this land carries special meaning. Their parents, Richard and Doris Bartholomew, purchased the property in the early 1960s as a place for the family to enjoy the outdoors. Mary, who lives in Dane County, later inherited the land. She chose to ensure that this special part of her family’s history would remain protected and become a place others could experience, too.
And there is much worth protecting. More than a quarter-mile of Big Cain Creek—a Class 1 trout stream—flows through the property, surrounded by northern hardwood forest, forested wetlands, sugar maples, balsam fir, and other habitat. Now that the preserve is open to the public, people can experience this spectacular landscape for themselves.
Mary has been part of the Groundswell community since 1995. You might also know her as a local naturalist who shares her knowledge and appreciation of the outdoors through programs at Cherokee Marsh, Aldo Leopold Nature Center, and other local natural areas. Mary is also a talented artist and generously donates proceeds from her holiday pottery sale to Groundswell each year.
Congratulations to our friends at North Central Conservancy Trust and to Mary on the opening of Big Cain Creek Preserve! What a meaningful way to honor a family’s connection to the land: protecting it forever and sharing it with generations to come.
Read or listen to the WPR story here: wpr.org/culture/big-cain-creek-preserve-wisconsin-nature-opens
📷: North Central Conservancy Trust & Groundswell Conservancy