December 2009. The first bobsleigh and skeleton competition took place at the track on 21 March 2010. Since winter 2015/2016 track is not frozen, all training and competitions are moved in Sochi Statistics Physical characteristics The track has 19 curves with an elevation difference of 105 meters. Because of the natural elevation difference of only 78 meters, the first 300 meters of the track are mounted on steel pillars up to 27 meters high. Starting from a tower like that of Sigulda, Latvia, the track has a maximum grade of 15%. Track technical details Because of Russian environmental regulations prohibiting the outdoor usage of ammonia refrigeration systems, three cooling systems consisting of an ammonia-carbon dioxide cascade system was used. References External links Rusem.ru pictures of Paramonovo track under construction in 2008 - accessed March 11, 2008. Official website USALuge.org photo gallery of the Moscow bobsleigh, luge, and skeleton track under construction in November 2007. - accessed February 24, 2008. Bobsleigh, luge, and skeleton tracks Sports venues in Russia Sports_venues_in_Moscow_Oblast