Open Chess Night @ the Library
5:30 pm – 7:30 pm · Longmont Public Library
Outdoors
Story in the Rocks: Geologic History of Boulder County
· 6 pm – 7:30 pm · Ron Stewart Parks & Open Space Building
Checked November 1, 2026 against bouldercounty.gov. Times can change; the organizer’s page is the record. Report a correction · Know something opening or closing? Tell us
Story in the Rocks: Geologic History of Boulder County at Ron Stewart Parks & Open Space Building, Tuesday, November 10, 6 pm – 7:30 pm. Listed by Boulder County; the organizer’s page has the details and any registration.
The geologic history of Boulder County’s remarkable landscape goes back nearly two billion years! Rocks contain a record of the earth’s history that can be read like the pages in a book.
— Boulder County, its listing