From the days when it was little more than a muddy path, the Avenue has been populated by smart people, men and women full of passion and drive and strong beliefs, many of them well meaning.

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The muddy 5km path winds up the valley, crossing over a succession of weathered, rickety bridges that span the headwaters of the River Quindio.

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As I followed him, silently cursing, the barest brushstroke of a path materialised, a muddy, leaf-strewn depression.

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Citron is treading the same path as short-seller Muddy Waters, which scored a bullseye in exposing fraud at Toronto-listed Sino-Forest, and more mixed results elsewhere.

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The paved road ended abruptly, with a steep dirt path leading to a bumpy, muddy road that work crews had carved into the bottom of a mountain so rescue teams could get in.

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