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Geothermal processes created the kaolinite rock formations known as The Chalk Cliffs (photo by Joe Stone).

The Upper Arkansas Valley geologic landscape has been shaped by epic events, including volcanoes, earthquakes, major fault lines, massive glaciers and epic floods.

Professional geologist Cindy Williams, Central Colorado Conservancy president, will explain these phenomena in a program titled “Geology, Fire and Ice ‒ Amazing Geologic Events Shaping Local Landscapes” from 7 to 8:30 p.m. Tuesday, March 20, in the Piñon Room at the Buena Vista Community Center, 715 E. Main St.

Beginning with a brief geologic history of the area, Williams will take participants on a virtual tour of phenomena seen today in our local landscape, explaining how various features were formed and what it means about our geologic past and our future.

From huge boulders in Buena Vista to the Chalk Cliffs, our local landforms and geologic features will take center stage as participants learn their amazing stories.

Cost is $5 for Central Colorado Conservancy members, $8 for others. Preregistration is not required.
For more information, call 719-539-7700 or email Julie Richardson at