The Flatirons are rock formations in the western United States, near Boulder, Colorado, consisting of flatirons. There are five large, numbered Flatirons ranging from north to south (First through Fifth, respectively) along the east slope of Green Mountain (elev. 8,148 ft or 2,484 m), and the term "The Flatirons" sometimes refers to these five alone. Numerous additional named Flatirons are on the southern part of Green Mountain, Bear Peak, and among the surrounding foothills. The artists of Anderson Design Group have rendered this classic design in the spirit of the vintage travel posters of the 20th Century. This beautiful illustration is available as a poster, print, notecard, postcard, canvas, or metal sign.