Tourists were horrified as a section of a new glass-bottomed walkway at Yuntai Mountain Geological Park in Henan Province, China, cracked under their feet on Monday.

The walkway, which just opened as a tourist attraction last month, is suspended at a height of about 3,500 feet. The glass cracked after a tourist dropped a stainless steel mug on the walkway, according to the Yuntai Mountain tourism bureau.
There are three layers of glass and only one broke, so the bureau says the tourists were in no danger - but the walkway is closed for repairs.