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Eco-photos of the week: Nov. 14-20

Nov. 19, 2010, 8:41 a.m.
A Muslim pilgrim prays on a rocky hill called the Mountain of Mercy

Photo: Hassan Ammar/AP

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Mountain of Mercy sunset

A Muslim pilgrim prays on Nov. 15 as the sun sets on a rocky hill called the Mountain of Mercy on the Plain of Arafat near Mecca, Saudi Arabia.

The annual Islamic pilgrimage draws 2.5 million visitors annually, making it the largest yearly gathering of people in the world.