To get to the biggest island on Baikal - Olkhon in winter you have to take an ice-road from the mainland. It usually goes from one of the bays of the Small sea of Baikal. Now the thickness of ice on Lake Baikal in a place where usually ice crossing is opened does not exceed 45 cm. For the road to be officially opened and equipped for travelling ice thickness of not less than 70 cm is needed. If the temperature stays at the current level (about -20 degrees Celsius) during another 2 weeks, crossing will be opened for cars with a total mass not exceeding 10 tonnes. The ice crossing to Olkhon operates until about mid-April, its length is about 12 km.