Hiked from the loop to Granite Park. Followed High Line trail past the Ahern Drift. Ascended to the summit of Iceberg Peak. Leaving the summit we descended and followed game trails to South Iceberg Peak. From there we descended west to the saddle the ascended along the Continental Divide. One cliff required ascending class 3/4 cliff with a traverse left to a short couloir leading back to the top of the ridge. Continued along the divide until past the small summit with black rock. Once past there we descended loose scree and beargrass slopes to the High Line trail and hiked back to the loop.
My lodging was near Babb but the Going-to-the-Sun was closed because the Reynolds Creek Fire had started. So drove to Babb via West Glacier, East Glacier, Browning and the Duck Lake Road.