Understanding BASE Jumping: The Meaning Behind the Acronym

BASE is an acronym for Building, Antenna, Span, Earth—the four structure types from which one can jump. Coined by Carl Boenish.

  • Building: Jump from building top.
  • Antenna: Jump from tall radio/TV antenna.
  • Span: Jump from cable car over gorge/river.
  • Earth: Jump from cliff/natural object (e.g., El Capitan).

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