Things to do in Boulder on Wednesday, May 13: Geology hike at Chautauqua

Geology hike: 10 a.m., Academic Hall, 298 Morning Glory Road, Boulder. Explore the fascinating geology of the Flatirons on a guided walk where ancient rock formations tell stories millions of years in the making. Discover the natural wonders beneath your feet while enjoying breathtaking views and engaging insights. Led by local expert and professional geologist, Bruce Manchon. Bring water, hat, sunscreen and sturdy shoes. Registration required. Free, chautauqua.com.