In pictures: Annual Hajj pilgrimage in Saudi Arabia

Muslim pilgrims arrive at Jeddah airport, a week prior to the start of the annual Hajj pilgrimage in the holy city of Makkah.
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(KARIM SAHIB/AFP/Getty Images)
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Muslim pilgrims arrive at Jeddah airport on August 26, 2017, prior to the start of the annual Hajj pilgrimage in the holy city of Makkah.
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(KARIM SAHIB/AFP/Getty Images)
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Female Muslim pilgrims arrive at Jeddah airport on August 26, 2017, prior to the start of the annual Hajj pilgrimage in the holy city of Makkah.
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(KARIM SAHIB/AFP/Getty Images)
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Muslim pilgrims arrive at Jeddah airport on August 26, 2017, prior to the start of the annual Hajj pilgrimage in the holy city of Makkah.
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(KARIM SAHIB/AFP/Getty Images)
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Muslim pilgrims arrive at Jeddah airport on August 26, 2017, prior to the start of the annual Hajj pilgrimage in the holy city of Makkah.
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(KARIM SAHIB/AFP/Getty Images)
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Muslim pilgrims arrive at Jeddah airport on August 26, 2017, prior to the start of the annual Hajj pilgrimage in the holy city of Makkah.
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(KARIM SAHIB/AFP/Getty Images)
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Muslim pilgrims arrive at Jeddah airport on August 26, 2017, prior to the start of the annual Hajj pilgrimage in the holy city of Makkah.
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(BANDAR ALDANDANI/AFP/Getty Images)
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Muslim worshippers perform the evening (Isha) prayers at the Kaaba, Islam's holiest shrine, at the Grand Mosque in Saudi Arabia's holy city of Makkah on August 25, 2017, a week prior to the start of the annual Hajj pilgrimage in the holy city.
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(BANDAR ALDANDANI/AFP/Getty Images)
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Muslim worshippers perform the evening (Isha) prayers at the Kaaba, Islam's holiest shrine, at the Grand Mosque in Saudi Arabia's holy city of Makkah on August 25, 2017, a week prior to the start of the annual Hajj pilgrimage in the holy city.