Nearly 2 million pilgrims from around the world gather this week near the Muslim holy city of Mecca for the annual Hajj. Worshippers crowd in close quarters often eating and sleeping outside, which may put them at risk for illness. Saudi Arabia's health minister says the Kingdom is ready. Arash Arabasadi reports.
Nearly 700 meters above sea level is a cave in Mecca where the Prophet Muhammad is believed to have spent much time in isolated contemplation. Some pilgrims making the annual trip – or hajj – to the holy city in Saudi Arabia brave a vertical climb to stand in a mountaintop cave where they believe Koranic revelations began. Arash Arabasadi reports.