Matching Pairs extreme sportsOnline version Vocabulary introduction by Silke De Keyser 1 BASE jumping is parachuting or wingsuit flying from a building, an antenna, a span, or the Earth (cliff). 2 Big wave surfing is a discipline within surfing in which experienced surfers paddle into or are towed onto waves which are at least 20 feet (6.2 m) high 3 a form of undersea diving in which the diver enters the water through a hole cut in the ice 4 the sport of snowboarding on mountains or glaciers accessible only by helicopter or skiplane
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