On September 5-8, in Magadan, XI International Symposium on Permafrost engineering took place. P.I. Melnikov Yakutsk Permafrost Institute, the Siberian Branch of the Russian Academy of Science was the organizer of the event from the Russian party. Among the participants of the symposium, besides the scientists from Russia there were also representatives from China, the USA and Japan – geocryologists, geophysics, engineers, design engineers.