As well as the usual Jinshanling or Simatai Great Wall tours, you can also explore other parts which are completely unrestored. Beijing Leo Hostel run a tour/hike to Secret Shen Shui Hu for 100rmb.

It should be noted that you're not always following the path of the wall itself, and if you want to get the 'classic' wall experience (and photos) take another tour instead of, or as well as, this one. On the other hand, you will definitely avoid crowds and hawkers.

Beijing Leo Hostel, Guang Ju Yuan, 52, Da Zha Lan Xi Jie, Qianmen

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The 10km stretch of the Great Wall from Jinshanling to Sumatai makes for an unforgettable hike. Wake early for the three-hour bus or taxi ride to the start and expect to return to Beijing in the early evening. The steep and crumbling steps are manageable. The only real hazard are the hawkers, whose stamina is pursuing tourists with bags full of bottled water and canned beer is as infuriating as it is impressive.

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