Valley Stewardship Network will offer a workshop on Driftless geology from 10 a.m. to 1:30 p.m. Saturday, June 22, at Nature Nooks Retreat, S4878 County Hwy. S, Viroqua.

Focusing on karst geology, stone outcroppings and why this area is considered part of the Driftless Region, the program will begin with a presentation. A break follow, and then there will be a question-and-answer period.

After a bring-your-own bag lunch, participants will go on a field trip, which will focus on how ancient, 1,000-foot thick stack of rock layers beneath us was formed, how water percolates down into our aquifers, and how we must protect this resource from careless use. The presenter for this topic, Kelvin Rodolfo, is professor emeritus with the Department of Earth and Environmental Sciences at the University of Illinois at Chicago. He and his wife Kathy Crittenden run a small, permaculture farm powered by solar and wind energy in the town of Viroqua.

This workshop is free, but registration is appreciated. You may register online at https://valleystewardshipnetwork.org/product/driftless-geology/.

For more information or to register, call (608) 637-3615 or email info@valleystewardshipnetwork.org.