It is recommended to bring a thin coat, especially for children. The temperature difference between the inside and outside the hole is quite large. Although there is no tiredness in climbing the mountain, there are still many places to climb up and down the hole. The ground in the hole is basically wet, but there is no water, which does not affect the visit. There are many strange stones in the cave, very spectacular, the photo can not be taken, you must be immersed in the experience. Our family is old and small, walking slowly, almost 5 hours to finish. Worth a visit! ! ! If I choose the Zhijin Grand Canyon again, I will definitely not go. There are many steps along the way. Although I climbed the stairs on the plank road, it was not far from climbing the mountain. It was too tired and there was no beautiful scenery.