Bobsled is a winter sport, also known as bobsleigh (the official name used in the Winter Olympic Games), in which teams make timed runs down narrow, twisting, banked purpose-built tracks in a gravity-powered, steerable sled.
... which often freezes in winter in its narrower part, and from Yezo (Japan) by the Strait of La Pérouse. Sakhalin is the largest island of the Russian Federation, being ...