The Wuwannian ice cave in Xining, Shanxi Province, was formed in the Quaternary glacier period of the Cenozoic, and has a history of 3 million years. The scenery of the icicles, ice cones, ice waterfalls, hail, ice flowers and other scenery in the cave is amazing. It is the largest ice cave found in the country so far, and the rare large ice cave found outside the permafrost layer in the world so far. Tickets booked online, directly brush your ID card to enter, convenient!