River paddle

Lake Carlos State Park

10 a.m.-2 p.m. Saturday


Paddle the Long Prairie River with experienced instructors and explore the shoreline of Lake Carlos in central Minnesota. Beginners through experts are encouraged to attend. The cost is $15 per canoe and includes a shuttle ride, equipment, life jackets and instruction. Registration is required. (1-320-852-7200, mndnr.gov)

Into fossils

Whitewater State Park

10 a.m.-noon Saturday


Find and keep fossils of plants and animals that lived here hundreds of millions of years ago. The fossil site is 9 miles from the park, so participants need to transport themselves. (1-507-312-2300, mndnr.gov)

Family kayaking

Cedar Lake Farm Regional Park

9-11 a.m. Saturday


Learn kayaking safety and how to paddle. Equipment provided. Cost is $20. Call 763-559-6700 to make a reservation. (threeriversparks.org)

Paddleboard lesson

Cedar Lake Farm Regional Park

1-3 p.m. Saturday


Equipment provided. Cost is $35. Call 763-559-6700 to make a reservation. This program is for ages 14 and older. (threeriversparks.org)

Geocaching 101

William O’Brien State Park

10:30 a.m. Saturday


Learn how to use a global positioning system device, and explore Minnesota state parks for hidden caches. There are a limited number of GPS devices for use. (651-433-0500, mndnr.gov)

Rock wonders

Interstate State Park

Noon Sunday


Learn and see the story of the park. A naturalist will lead a walk over renowned rock features. Discover how lakes of lava and gushing glacial waters formed the unique glacial potholes. All ages are welcome. (651-465-5711, mndnr.gov)