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There’s a river in Pennsylvania whose endpoint is unknown — and it’s not the only “lost” river

On maps, rivers are typically depicted as blue lines — with a starting point, usually near a mountain where rainwater collects; and an endpoint, usually in a lake or ocean. With the advent of satellite imagery, tracing the path of a river is typically a simple exercise; no more hacking through brush and scaling mountains to map geography....

Originally posted on salon.com