Ask a Naturalist – Swinging Bridge Rove @ Jay Cooke State Park – Carlton MN Read More Aug 5 Ask a Naturalist – Swinging Bridge Rove @ Jay Cooke State Park – Carlton MN Wednesday, August 5 @ 8:00 am The naturalist will be roving about the bridge sharing stories and photos about the river and the 100-year-old bridge. Stop in anytime for a...