we meet dario blanco, head of the iquique free trade zone users assication.ys the situation is improving. dario: what i can say is that the clothing import companies want to help things improve. they want to address the negative impact of their business model. the situation is definitely going to change. reporter: most of the clothing is made of synthetic fabrics and takes years to biodegrade. this family sifting through the piles of used clothes are refugees from venezuela. they're looking for clothes they can wear, and also anything they can sell. sofia: my two children and i came through the desert. we had to leave behind our suitcases containing all our clothes, or we would never have made it. i've used up all my savings. reporter: everywhere we go, we see refugees who have traveled through the desert. despite the scorching midday sun, this family wants to keep going until they reach iquique, where they hope to find work. the city is 200 kilometers away. the family looks exhausted. andrÉ: it's hard. it took us four days to get here from the border, twenty