Officials have reportedly closed the walkway.
A section of a new glass-bottomed walkway at Yuntai Mountain Geological Park in Henan Province, China, cracked at around 5 p.m. Monday afternoon, causing the tourists on it to understandably freak out.
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A spokesperson for the Yuntai Mountain tourism bureau told People's Daily Online that the cracks occurred after a tourist dropped a stainless steel mug on the walkway. Only one of a total of three layers of glass broke, so the tourists were not in danger, the spokesperson said.
The U-shaped walkway, which just opened in September, is closed until further notice.
The types of glass used for these kinds of attractions is designed to seemingly shatter without giving way, according to a statement from Willis Tower, in Chicago, where glass in a viewing box high above the city cracked last year.