Sidney's own title is inscribed at the lower margin: "The Flat Irons — Colorado" — placing this work in the Boulder, Colorado landscape, specifically the Flatirons rock formations that rise dramatically from the foothills of the Rocky Mountains. This is the most geographically specific work in the landscape section, naming both the formation and the state.
The painting captures the Flatirons with genuine geological understanding. The rock faces — rendered in warm brown, ochre, and gray with the characteristic layered, tilted structure of the Flatirons — rise from left to right across the middle of the composition, their sharp angular profiles distinct against the sky. The foreground is a thin strip of bright green meadow, connecting the viewer to the base of the formation. The rock faces carry passages of vivid purple — not naturalistic but emotionally true, the purple that shadows take at altitude in Colorado light.
The sky is the most chromatically unexpected element: pink at the upper left corner and the far right, transitioning through blue to deep blue-violet cloud forms. This warm-to-cool transition in the sky echoes the warm-to-cool transition in the rock faces below, creating a chromatic rhyme between sky and earth that ties the composition together.
As a confirmed titled and located work, this joins Stormy Mountains White Bear Lake Colorado (281) and White Bear Lake Mtns CO (337) as part of Sidney's documented engagement with the Colorado landscape. The Flatirons are beloved by Colorado hikers — their presence here is not just geographic but personal.