Al-Qaqa Ibn Antar, 30, was climbing the steep walls of the Hardah Dam volcanic crater in the southern province of Dhale on Friday when he lost his grip and fell into the 120 metre (393 feet) crater Al-Qaqa Ibn Antar, 30, was climbing the steep walls of the Hardah Dam volcanic crater in the southern province of Dhale on Friday when he lost his grip and fell into the 120 metre (393 feet) crater