Many businesses also use the word "Flatirons" or "Flatiron" in their names. Hornbein was an early Boulder, Colorado, area climber on the Flatirons. The Flatirons are a widely recognized symbol of Boulder. The Flatirons were known as the "Chautauqua Slabs" c. 1900 and "The Crags" c. 1906. The eroded steeply dipping units form hogbacks and flatirons. The erosion of tilted beds will form landforms called cuestas, homoclinal ridges, hogbacks, and flatirons. Flatirons Community Church was founded in Lafayette in 1997. Dip slopes form the backslopes of cuestas, homoclinal ridges, hogbacks, and flatirons. Pediment flatirons can merge downward into a fluvial terrace. Riis then returned to New York by selling flatirons along the way. Burntisland went on to build six further flatirons for Fulham between 1938 and 1948. The Flatirons consist of conglomeratic sandstone of the Fountain Formation. The hills are a type known as flatirons. He has interviewed for the Silicon Flatirons Entrepreneurs Unplugged Series. He is on the Entrepreneurship Advisory Board at Silicon Flatirons.