The most anticipated attraction of this trip, Antelope Cave (Antelope Canyon), one of the seven geological photography wonders in the world. This time I came to the United States, my main purpose is to visit two attractions, one Yellowstone National Park, the other is the Antelope Cave, both attractions have been completed, this trip is also satisfied. The antelope cave is divided into two separate parts in the terrain: the upper antelope canyon and the lower antelope canyon. The difference is that the upper antelope canyon is located on the ground and there are more tourists. Listening to the tour guide said that our tour bus can not enter, we need to transfer to their proprietary vehicle to enter the Antelope Valley, and the private car in the Antelope Valley cannot enter, which is a bit troublesome. The Xiayan Antelope Canyon is located below the ground. It takes about 15 minutes to walk from the place where the bus stops to reach the Xiayan Antelope's cave. It is not suitable for the elderly and children to climb the stairs. It will be dangerous to rain (even if it is very small). The tour guide said there had been accidents here before, and a group of 12 people took the rain into the canyon without the Navajo Indian guide, which caused flash floods and they were all swept away by sudden flash floods, except for the tour guide, Other tourists are in danger. So now you need to sign a life and death certificate before entering the Antelope Cave. It is also said that the lower Antelope Valley is closed for 9 months in a year, so there will be fewer people going to the Antelope Valley.