In 1976, Ollie Gelfand learned to perform no-handed skateboard aerials using a gentle raising of the board's nose and a scooping motion to keep the board with the feet. In 1982, Rodney Mullen debuted an "ollie" on flat ground using a see-saw motion, striking the tail of the board on the ground to lift the nose, and using the front foot to level the board in mid-air. Mullen's flat ground ollie transformed the practice of skateboarding. The flat ground ollie technique is strongly associated with street skateboarding; half-pipe riders typically rely more on the board's upward momentum to keep it with the rider.
Congratulations to Team Io-Honu, the first to find.