event had to be clear cut in order to remove the trees located there along with its slope being reduced from 66-71% to 28-31%. A total of was moved along with the canalization of a deep ditch long. Seefeld used lesser loops for the cross-country courses compared to the 1964 Games. New lighting was installed in Olympiahalle to accommodate color television along with a new loudspeaker system. A plastic pipe under the ice had to be replaced when American figure skater Terry Kubicka broke through the ice, piercing the pipe, and creating a coolant leak. Two new compressors of ammonia refrigeration were added to Eisschnellaufbahn to maintain the ice at . The biggest change was at the bobsleigh and luge track where a single track was used for combined events, the first of its kind in the world. Construction of the track began in 1973 under the auspices of the International Bobsleigh and Tobogganing Federation and International Luge Federation and was completed the following year. During the 1975 Olympic Test Competition on the track, East Germany set up cameras and timers all along the run to determine the fastest lines through each of the straights and curves. During the Olympics In the alpine skiing men's downhill, Austria' Franz Klammer came from behind to beat Switzerland's Bernhard Russi in where television coverage was given for the entire run. The work that East Germany did at analyzing the Igls track in 1975 paid off with gold medals in all three luge and both bobsleigh events. During the cross-country skiing men's 4 x 10 km relay event, East Germany was in second place after the first leg of the event. Axel Lesser, the second leg of the East German team, ran into a spectator, injured his knee, and had to abandon the race. After the Olympics Bergiselschanze remains a part of the Four Hills Tournament. Seefeld would play host to the FIS Nordic World Ski Championships in 1985 and 2019. Igls has served as host of the IBSF World Championships (previous FIBT) in 1991 (men's skeleton), 1993 (bobsleigh), 2000 (skeleton), and 2016. The track hosted the FIL European Luge Championships in 1990 and hosted the FIL World Luge Championships five times in 1977, 1987, 1997, 2007, and 2017. Seefeld and Innsbruck combined to host the Winter Universiade in 2005. In 2012, Innsbruck hosted the first Winter Youth Olympic Games. All venues used for