Proximity flying is an advanced version of Wingsuit BASE jumping. Proximity fliers will hug the terrain that's either below them or to their side, passing within feet of cliff walls or sloping ground as they reach speeds well over 160 km/h (100 mph). The sport is extremely dangerous, even for experienced fliers, as small errors or unfavorable conditions could result in a fatal collision.
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Key Facts In This Video
Watch a wingsuit flier zoom past a crowd at around 250 km/h (155 mph). 00:15
Proximity flier Jokke Summer estimates that only around 20 people worldwide practice the sport. 00:48
In Norway, approximately 1 in 2,317 BASE jumps results in a fatality. 01:36