The stalemate between the venues did not last long, as four world records were set in Oberstdorf within a span of four days in 1976, bringing the official figure up to set by Toni Innauer at the end of the event. Three years later, Planica drew level once again when Klaus Ostwald equalled the world record. Elsewhere, in the Western Hemisphere, the United States opened its own ski flying venue in 1970: Copper Peak in Ironwood, Michigan, had a K-point of 145 m, therefore not designed for world record distances from the outset. It is the only ski flying hill to have been built outside of Europe.