You may think of Bozeman, Montana as a mecca for winter sports enthusiasts, and rightly so. But if Kris Zigich and Evan Mathews have their way, the prime rock climbing of south central Montana is about to become a not-so-well-kept secret. Under the masthead of Cruxin’ Productions, Zigich and Mathews have issued a feature-length film highlighting the superb variety of climbing (and climbers) to be found in Gallatin Canyon, Natural Bridge, Chestnut Mountain, Allenspur, and Bear Canyon — all a short drive from the thriving mini-opolis of Bozeman. This summer, instead of queuing up for the shady lines at Leavenworth and Smith, it might be time to head for the Big Sky Country.