Thursday, July 29 at 6 p.m. Meeting at Base Trailhead Parking Lot (lower lot). Please bring sturdy footwear & water!

Join Steve Stresky as he draws upon more than 40 years as a professional   geologist and a lifelong passion for adventuring in the Bighorns to teach us about the structural evolution of the mountains, the geometry of strata along its flanks, the differences between rock types, their potential for aquifers and how those rock types and aquifers affect the landscape and how it’s used. He’ll also discuss the origin of Red Grade Spring and how such a spring with no seeming source above can form.