We all love gazing at the Flatirons in Boulder, Colorado. But did you know there is a giant “CU” etched into the Third Flatiron? I say etched because it has been treated with so many chemicals and mechanical devices over the years. That the letters are pretty much etched into the rock. There is even a faint “I” next to the “CU.” Spelling “ICU.” In this video, we tell the story of how those letters appeared and how to locate the damage. Continue reading Did you know there is a giant “CU” on the Boulder Flatirons?