On August 1, the whole family of 6 people visited the "Shandong Grand Canyon". The impression is that the scale of the underground canyon is very large, which is the larger underground cave I saw, but the attractions are not very prominent, the lighting setting is not good, many classics can not be seen clearly, and photos cannot be taken. It is recommended to visit on foot, because the rafting place is not as good as other places, and there are not many attractions to see.