The exquisitely serrate "Rivalry Ridge" (John Roper's appellation), whose highest point is "Ex Spire" (Pk 5960+), to the north of Hidden Lake Peaks. Rivalry Ridge is the divide between Sibley Creek's Main Fork and Marble Creek. Teebone Ridge is at far left. The conical point to its right is "Radar Peak" (Pk 6329) while farther right almost directly behind Ex Spire is "The Bat" (Pk 6475). On the horizon at left-center is The Trapezoid (north end of Teebone Ridge). On the far horizon at right is Luna Peak. At foreground-right is the cliff mentioned in this picture. June 27, 2003.