Riverboarding is a sport in which thrill-seekers—and sometimes even emergency rescuers—lie prone on a specialized board and ride down rivers, through rapids, and over waterfalls using swim fins for propulsion and steering, at times performing tricks. The sport is known as hydrospeed in France, where it is thought to have originated in the late 1970s with river guides riding burlap mailsacks stuffed with life vests. What is the current record for tallest waterfall descended using a riverboard? Discuss
Source: The Free Dictionary