For more than 50 years, Baltazar Ushca Tenesaca has been ascending Ecuador's tallest mountain to harvest glacial ice. At one time, there were 40 or so ice merchants who made the daily trek up the active volcano. But now, only Ushca continues this 500-year-old tradition. And while the demand for ice isn't as high as it once was, Tenesaca's harvesting methods remain the same. Despite the challenges, this ice merchant is as dedicated to his work as ever.

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This story is a part of our Planet Earth series. From mammals to insects and birds to reptiles, we share this great big world with all manner of creatures, large and small. Come with us to faraway places as we explore our great big planet and meet some of its wildest inhabitants.

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