Volunteers sledgehammer glass bridge in China

These rather brave volunteers were recently enlisted to help test the safety of a glass bridge using sledgehammers.

The bridge, designed by architect Haim Dotan, is 300m above the Zhangjiajie Grand Canyon in the central Hunan province, China.

See also: Swarm of flies forces bridge closure (video)

See also: World's longest and highest glass-bottomed bridge completed in China

The thickness of every panel on the 430m long bridge is 1.5cm.

It has not yet been announced when the official public opening is, although it's expected to be July.

As well as being sledgehammered, a 15-tonne SUV was also driven over the glass to test its strength.

According to 9News there are 99 panes of glass in the bridge and 30 people were allowed to test their strength against the bridge.