HALFPIPE: By the late 1970's, snowboarders in Tahoe City (Lake Tahoe), California created a one-hit half pipe at the Tahoe-Truckee Sanitation dump. They called it the Tahoe City Pipe.  By the early 1980s, Damian Sanders and Shaun Palmer rode the Donner Quarter Pipe.  But it wasn't until 1983, that Tom Sims organized the first World Championship halfpipe competition at Soda Springs, California.  By 1986, when the World Championship contest moved from Soda Springs, California to Breckenridge, Colorado.  And that's when the sport took off.  By the 1990s, halfpipe building reached the machine age when Doug Waugh, a farm-machinery mechanic from Colorado unveiled his Pipe Dragon.