Muslim pilgrims sit by the site where pilgrims were crushed and trampled to death during the annual hajj pilgrimage in Mina, Saudi Arabia, Thursday, Sept. 24, 2015. The crush killed hundreds of pilgrims and injured hundreds more in Mina, a large valley on the outskirts of the holy city of Mecca, the deadliest tragedy to strike the pilgrimage in more than two decades. (AP Photo/Mosa'ab Elshamy)