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People in Sudan can apply for an Egyptian visa in two places - Wadi Halfa in the north and Port Sudan in the east.

Most head to Wadi Halfa as it is nearer to Argeen, the main land border crossing.

But there is almost no infrastructure in Wadi Halfa and people wait in queues for hours to be processed.

More than 120,000 Sudanese without travel documents are trapped in Wadi Halfa and surrounding areas, according to a Sudanese migration official, speaking on condition of anonymity because he wasn’t authorized to brief media.

Wadi Halfa, which normally has a population of few tens of thousands, is also flooded by huge crowds of Sudanese men, women and children who do have their passports but must apply for visas at the Egyptian Consulate in the town to cross the border.