Caldwell unties

Climbing fanzine R&I reports: On a cold, snowy day in late winter, John Stackand Tommy Caldwell succeeded on the extreme campus moves and absurd pocket pulls of Turn That Frown Upside-Down 8a/b bloc, a likely candidate for Boulder, Colorado´s hardest boulder problem. The new problem is on a superb granite block near Gross Reservoir, high above Flagstaff Mountain.