A 3,540-foot-high (1,080m) glass walkway at Yuntai Mountain Geological Park in China cracked right under visitors’ feet on Monday after a visitor dropped a stainless steel cup. This walkway opened on September 20th, and given that another glass bridge was recently opened in China over a mountain gorge, many Chinese people have been less than thrilled at the news.

The visitors were not endangered, as the walkway features several layers of 2.7cm-thick glass, each of which can support 800kg per square meter. Because the glass plates were custom-made, there is no word on when the walkway will be reopened.

(Content & images source: BoredPanda)