In adventures he chronicles on his Facebook page, Existe Água em SP (“There is Water in SP”), the river hunter Adriano Sampaio is a tireless urban expeditionist, walking the city in search of lost rivers and springs, and posting a steady stream of videos to his page. He and his friend Ramon Bonzi, an urbanist, use 1930s maps laid over modern-day street maps to track down hidden and forgotten waterways, peering over walls, lifting manhole covers and climbing about in the undergrowth in search of rivers, streams and springs. “We always find something,” says Sampaio.
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