One of South America's most dramatic canyon roads, descending from Bucaramanga into the 2,000m-deep Chicamocha Canyon before emerging at San Gil — Colombia's adventure capital — and Barichara, considered the country's most beautiful colonial town. Route 45A rolls through switchbacks above ochre canyon walls, crosses the Chicamocha River, and climbs to San Gil. The return via Barichara's whitewashed streets on the canyon rim is unforgettable.
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