Indoor skydiving is body flight in a vertical wind tunnel: a column of air moving upward fast enough to support a person, recreating the sensation of freefall without an aircraft, a parachute or altitude.
How a tunnel works
Powerful fans drive air upward through an enclosed flight chamber at speeds broadly matching freefall — roughly 120 mph for belly flying, faster for head-down. Because the air moves and the flyer does not, the sensation is close to freefall while your position in the room stays constant.
Modern recirculating tunnels reuse the same air through a closed loop, which makes speed control precise — instructors adjust it to the individual flyer.
Who it is for
For most visitors it is a standalone activity: no training course, no weather dependency, and minimum ages far lower than skydiving — commonly around three or four years old.
For skydivers it is a training tool. A ten-minute tunnel block delivers more body-flight time than several jumps, with an instructor beside you giving immediate correction. Freefly and formation teams train this way routinely.
How it differs from a skydive
There is no exit, no altitude awareness, no canopy flight and no landing — which is to say the tunnel trains one component of skydiving rather than the whole thing. Body flight transfers directly; everything else still has to be learned at a drop zone.
These pages explain what things are so the language makes sense. They are not instruction and cannot substitute for it — skydiving is taught in person by rated instructors at a drop zone, and anything involving equipment handling or emergency procedures belongs there rather than on a web page.