China's dizzying glass skywalk just cracked.

Cracks have appeared on a U-shaped glass-bottomed skywalk built around a mountain cliff in China, sending tourists fleeing off the structure, Chinese media reported.

Internet users posted pictures online showing cracks on the reinforced glass flooring, which is suspended more than 1,000 metres above sea level, around a cliff on Yuntai Mountain in Henan province, the Legal Evening News reported.

Ah, quality control in a workers' paradise.