Read the latest updates on the Hajj pilgrimage here
With more than 1.8 million pilgrims performing Hajj this year, the number of pebbles thrown during the stoning the devil ritual may be more than any one complex can handle.

Kedana, the main developer of the holy sites, told the Saudi Press Agency that the process of dealing with the stones begins on the first day of the stoning of the devil, immediately after the pilgrims complete the rite.
The pebbles fall 15m into the basement, where a conveyor belts collect them.
They are then sifted and sprayed with water to get rid of dust and other impurities.
Finally, they are transported to a storage centre where they will be sorted after the end of the pilgrimage.
Experts say tonnes of pebbles are needed, given the number of pilgrims expected every year.
Kedana provides bags of pebbles for the stoning rite at the start of every Hajj season.
There are about 300 collection points for pilgrims in Muzdalifah, apart from the Jamarat Bridge complex in Mina.

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Publisher: Activision
Console: PlayStation 4 & 5, Windows, Xbox One & Series X/S
Rating: 3.5/5
Benefits of first-time home buyers' scheme
- Priority access to new homes from participating developers
- Discounts on sales price of off-plan units
- Flexible payment plans from developers
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- DLD registration fee can be paid through banks or credit cards at zero interest rates
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Tearful appearance
Chancellor Rachel Reeves set markets on edge as she appeared visibly distraught in parliament on Wednesday.
Legislative setbacks for the government have blown a new hole in the budgetary calculations at a time when the deficit is stubbornly large and the economy is struggling to grow.
She appeared with Keir Starmer on Thursday and the pair embraced, but he had failed to give her his backing as she cried a day earlier.
A spokesman said her upset demeanour was due to a personal matter.
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Sand storm
- Particle size: Larger, heavier sand grains
- Visibility: Often dramatic with thick "walls" of sand
- Duration: Short-lived, typically localised
- Travel distance: Limited
- Source: Open desert areas with strong winds
Dust storm
- Particle size: Much finer, lightweight particles
- Visibility: Hazy skies but less intense
- Duration: Can linger for days
- Travel distance: Long-range, up to thousands of kilometres
- Source: Can be carried from distant regions
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Sole survivors
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- Bahia Bakari, then 12, survived when a Yemenia Airways flight crashed near the Comoros in 2009, killing 152. She was found clinging to wreckage after floating in the ocean for 13 hours.
- Jim Polehinke was the co-pilot and sole survivor of a 2006 Comair flight that crashed in Lexington, Kentucky, killing 49.
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The specs
Engine: 2-litre 4-cylinder and 3.6-litre 6-cylinder
Power: 220 and 280 horsepower
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Transmission: eight-speed automatic
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TO A LAND UNKNOWN
Director: Mahdi Fleifel
Starring: Mahmoud Bakri, Aram Sabbah, Mohammad Alsurafa
Rating: 4.5/5