A man drives an excavator on a glass walkway, suspended 180 meters in the air, during a bearing test in the Shiniuzhai National Geological Park in Pingjiang County, Central China’s Hunan Province, Sept. 29, 2017. Authorities at the park are preparing for peak tourist numbers during the National Day holiday from Oct. 1 to 8. (Photo: China News Service/Yang Huafeng)
