Tourists in China visiting what is claimed to be the world’s longest and highest glass bridge have been invited to smash it with sledgehammers to prove it is safe, state media reported. About 30 visitors were invited to try to smash the glass floor of the bridge at the grand canyon in Zhangjiajie in Hunan province on Saturday, the state-run news agency Xinhua said. Fancy a walk across this bridge? China completes building of world’s longest, highest glass-bottomed bridge The tourists wielding 5.5 kg hammers did succeed in cracking the glass, but a two tonne vehicle then drove over the bridge in safety, according to the article. “Even if the glass cracks, it will not break into pieces. Pedestrians can still walk on it,” Chen Zhidong, an official at the park, was quoted as saying. It looks smashing! Terrifying glass-bottomed bridge in China with stomach-churning views ... of the ground The bridge, 430 metres long, six metres wide and 300 metres above the bottom of the valley, can hold 800 people walking on it at one time. A BBC reporter Dan Simmons did a similar test on the walkway with a sledgehammer earlier this month, but some were not convinced according to media reports as he struck a separate piece of glass rather than the structure of the bridge itself.