In photos: The border that bears witness to Venezuela's humanitarian drama

Venezuelans have been flooding across the border to Colombia. They go to buy food and medicines that are scarce in their country. According to the United Nations, an estimated 1.5 million Venezuelans have fled the country in search of food, medicine and opportunity.

Por:Univision

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This is how Venezuelans cross into Colombia. President Maduro closed the borfer recently on the grounds of stopping 'international gangs' he said were trying to destabilize the Venezuelan economy. Photo: GEORGE CASTELLANOS / AFP / Getty Images.

GEORGE CASTELLANOS/AFP/Getty Images

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A man crosses the Simón Bolívar International Bridge of North Santander in Colombia back to San Antonio del Táchira, Venezuela, on December 17, 2017. Photo: GEORGE CASTELLANOS / AFP / Getty Images.

GEORGE CASTELLANOS/AFP/Getty Images

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The lines at the customs office of San Antonio del Táchira, before crossing the Simón Bolívar bridge. Photo: GEORGE CASTELLANOS / AFP / Getty Images.

GEORGE CASTELLANOS/AFP/Getty Images

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A man crosses the Francisco de Paula Santander border bridge linking Ureña, in Venezuela, with Cúcuta in Colombia, despite the closure order issued by the Venezuelan government. Photo: GEORGE CASTELLANOS / AFP / Getty Images.

GEORGE CASTELLANOS/AFP/Getty Images

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A man shows bills of 100 bolivars while crossing the Venezuelan border of Ureña with Cúcuta, Colombia. Photos: GEORGE CASTELLANOS / AFP / Getty Images.

GEORGE CASTELLANOS/AFP/Getty Images

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Officials from the Colombian police (right) and Venezuelan (left) raise the fence to open the border while Venezuelans cross the Simón Bolívar bridge from San Antonio del Táchira, Venezuela, to Cúcuta, Colombia, on July 10, 2016. It was the The first time that women dressed in white led the advance towards Colombia, despite the policy of "closed doors". Photo: SCHNEYDER MENDOZA / AFP / Getty Images.

SCHNEYDER MENDOZA/AFP/Getty Images