[Answer] Travel Channel visited the scariest hiking trails in the US and discovered that an area of _______ was used as a hospital for tuberculosis patients in the 1800s. It's no wonder guides and visitors have reported hearing ghostly coughing in that section.

Step 1 : Introduction to the question "Travel Channel visited the scariest hiking trails in the US and discovered that an area of _______ was used as a hospital for tuberculosis patients in the 1800s. It's no wonder guides and visitors have reported hearing ghostly coughing in that section."

...1. Death Valley National Park 2. Mammoth Cave National Park 3. Great Smoky Mountains National Park 4. New Jersey's Pine Barrons

Step 2 : Answer to the question "Travel Channel visited the scariest hiking trails in the US and discovered that an area of _______ was used as a hospital for tuberculosis patients in the 1800s. It's no wonder guides and visitors have reported hearing ghostly coughing in that section."

Mammoth Cave National Park.,:

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