In 1843, Count Julius Dzieduszycki and 100 servants searched for them for two years in the Arabian desert.

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People would not have needed to move through Sinai and the inhospitable Arabian desert to reach the Indian Ocean shoreline.

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But the pilgrims aren't heading off for '"some time by the sea" -- but into the vast Saudi Arabian desert, to the valley of Mina.

CNN: Hajj diary: The great migration

In mid-February, Prince made a pilgrimage to the Saudi Arabian desert to meet with Citi's largest individual shareholder, Prince Alwaleed bin Talal, who has said recently that Citi needed to take "draconian" measures to cut costs.

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We often stood on the active flight line, in the middle of the Saudi Arabian Desert, exchanging stories and life experiences and agreed that when we returned home, we would find some way to engage struggling veterans that had become homeless or who had otherwise fallen down.

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The Arabian oryx prefers dry, near-desert conditions and can survive without water for long periods.

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The researchers say the toolmakers at Jebel Faya may have reached the Arabian Peninsula at a time when changes in the climate were transforming it from arid desert into a grassland habitat with lakes and rivers.

BBC: Humans 'left Africa much earlier'

The British created Jordan from the patch of desert between Palestine and Iraq, and appointed an Arabian prince as its king.

BBC: Analysis: Jordan's precarious position