History hides just about everywhere we go in Missouri, often leaving us to uncover fascinating backstories when we’re up for digging a little bit. The longest tunnel in Missouri, for example, dates back to the early part of the 20th century. While it closed to train traffic decades ago, it’s now the highlight of a popular trail to which hikers flock.

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Did you know the backstory of the longest tunnel in Missouri? Have you hiked through it? Share your experience in the comments! Did you also know that the Christopher S. Bond Bridge is the tallest bridge in Missouri? (It’s definitely worth checking out.)

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