The Great Wall, one of the beauties of the world, thousands of km of fortifications. Usually full of tourists, stalls and debatable tourist attractions. However there is the possibility to have a unique and unforgettable experience of the Wall: two days of trekking with a night in tents at the foot of the walls, to be able to enjoy the sunset and the sunrise from the best panoramic point. The chosen area for you is the Huanghuacheng, the only section of the wall that is found underwater because of the construction of two dams on the overlooking lake.