Sand Patch Grade is an approximately 100-mile-long (160 km) section of railroad track known for its steep grades and curves through the Allegheny Mountains of Pennsylvania and western Maryland.[1] Dropping over 1,000 feet (300 m) in about 20 miles (32 km) and with grades as much as 2%,[2] Sand Patch Grade is one of the steepest railroad grades on the East Coast.[3]
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