Spectacular drone footage has emerged from China of a new 260-metre glass "skywalk" which clings to a cliff in Henan.<br /><br />The U-shaped path is at a dizzying height of more than 1800 metres up Mount Yuntai and the see-though floor means visitors can stare down at the immense drop beneath their feet.<br /><br />The "skywalk" is set to open officially in early October.
