Chris Detrick | Tribune File Photo
Creating a snow plume on a powder day at Snowbird, William Kerig is a Salt Lake City-based
Steve Griffin | Tribune File Photo
Deer Valley Mountain Host supervisor, Tate Shaw, skis through the trees at the resort Jan. 12
Steve Griffin | Tribune File Photo
With the Heber valley in the background a skier catches some air on a ridge in Mayflower Bowl
Chris Detrick | Tribune File Photo
A skier makes his way down the Fortune Teller trail under the Jupiter lift at the Park City
Steve Griffin | Tribune File Photo
Powder skiing at Alta Ski Resort, March 6, 2007.
Chris Detrick | Tribune File Photo
William Kerig flies through the air while skiing down Snowbird's Regulator Johnson run on Ch
Chris Detrick | Tribune File Photo
Kelty spokesperson Drew Simmons, aka "Kjelty Bakpakkvrson" skis at Alta Ski Resort
Tribune File Photo
Alta Ski Resort in 1978.
Tribune File Photo
Alta Ski Resort in 1940's.
Chris Detrick | Tribune File Photo
Creating a snow plume on a powder day at Snowbird, William Kerig is a Salt Lake City-based author whose new book examines extreme skiing through 15-year-old Kye Petersen's trip to Chamonix, France to ski the glacier where his father died a decade earlier.
Steve Griffin | Tribune File Photo
Deer Valley Mountain Host supervisor, Tate Shaw, skis through the trees at the resort Jan. 12, 2004.
Steve Griffin | Tribune File Photo
With the Heber valley in the background a skier catches some air on a ridge in Mayflower Bowl at Deer Valley Ski Resort, Jan. 12, 2004.
Chris Detrick | Tribune File Photo
A skier makes his way down the Fortune Teller trail under the Jupiter lift at the Park City Mountain Resort March 19, 2006.
Steve Griffin | Tribune File Photo
Powder skiing at Alta Ski Resort, March 6, 2007.
Chris Detrick | Tribune File Photo
William Kerig flies through the air while skiing down Snowbird's Regulator Johnson run on Christmas Eve. An accomplished skier, Kerig is a Salt Lake City-based author of a new book and movie on extreme skiing, focusing on a 15-year-old boy who goes to Chamonix, France to ski the glacier where 10 years earlier his father died.
Chris Detrick | Tribune File Photo
Kelty spokesperson Drew Simmons, aka "Kjelty Bakpakkvrson" skis at Alta Ski Resort December 7, 2008.
Tribune File Photo
Alta Ski Resort in 1978.
Tribune File Photo
Alta Ski Resort in 1940's.