Caleb Love, left, 11, and Kevin Andrews, 11, use plastic scoops to dig snow from the inside of a quinzhee hut at French Regional Park Wednesday, Feb. 13, in Plymouth.  About 30 children took part in the 'Homeschool: Snow Shelters' class that included learning how to build snow caves and quinzhee huts.
Alex Litts, 11, tests the integrity of a quinzhee hut by stomping on the roof of the recently built snow shelter at French Regional Park Wednesday, Feb. 13, in Plymouth.  Alex was one of about 30 children who attended the 'Homeschool: Snow Shelters' class that included learning how to build snow caves and quinzhee huts.
Three Rivers Park District outdoor recreation specialist Dan Fjell, center, directs youngsters attending his class, 'Homeschool: Snow Shelters' at French Regional Park Wednesday, Feb. 13, in Plymouth.  The class was designed to teach different techniques for building three different snow shelters: igloos, snow caves and quinzhees.
Sammy Jones, 6, throws snow while helping to build a quinzhee hut, a snow shelter being built at French Regional Park Wednesday, Feb. 13, in Plymouth.  Sammy was one of about 30 children who attended the 'Homeschool: Snow Shelters' class that included different techniques for building three different snow shelters: igloos, snow caves and quinzhees.
A quinzhee hut, looking a bit like a hedgehog or a porcupine, has sticks stuck in it to measure the thickness of the walls and roof, providing structural integrity for the snow shelter at French Regional Park Wednesday, Feb. 13, in Plymouth.  About 30 children attended the 'Homeschool: Snow Shelters' class that included learning how to build snow caves and quinzhee huts.
Paul "Tweed" Carlson, center, connects with the ball using a 7-iron while puffing on a large Dominican cigar on frozen Wayzata Bay Saturday, Feb. 7 during the annual Chilly Open.
March 20, 2005; Berthoud Pass, CO, USA;  Alpine climber and experiential instructor Dan Trockman nears the summit of Berthoud Pass from the East side.
Headless Roman statue • Ankara, Turkey, • 2006
Caleb Love, left, 11, and Kevin Andrews, 11, use plastic scoops to dig snow from the inside of a quinzhee hut at French Regional Park Wednesday, Feb. 13, in Plymouth. About 30 children took part in the 'Homeschool: Snow Shelters' class that included learning how to build snow caves and quinzhee huts.
Caleb Love, left, 11, and Kevin Andrews, 11, use plastic scoops to dig snow from the inside of a quinzhee hut at French Regional Park Wednesday, Feb. 13, in Plymouth.  About 30 children took part in the 'Homeschool: Snow Shelters' class that included learning how to build snow caves and quinzhee huts.
Caleb Love, left, 11, and Kevin Andrews, 11, use plastic scoops to dig snow from the inside of a quinzhee hut at French Regional Park Wednesday, Feb. 13, in Plymouth. About 30 children took part in the 'Homeschool: Snow Shelters' class that included learning how to build snow caves and quinzhee huts.
See photo in original gallery.