Natural Tunnel State Park
Under $25Ride a chairlift or hike down to a limestone tunnel more than 850 feet long that is so big freight trains still run through it.

Photo: niemand und nichts, CC BY 2.0, via Wikimedia Commons. Cropped and resized.
A hillside nature park with a planetarium, animal habitats, trails, and a reservoir near Kingsport.
853 Bays Mountain Park Rd. Kingsport, TN 37660 · Kingsport, TN
Bays Mountain Park and Planetarium sits on Bays Mountain in Kingsport. The grounds include a nature center, a planetarium theater, animal habitats, a fire tower, a small reservoir, and many miles of hiking and biking trails. Visitors can also take barge rides on the water, join camping and fishing options, and attend laser light shows and planetarium presentations. Park hours change by season.
The closest stops to Bays Mountain Park, ordered by straight-line distance. A few more like it, plus some different kinds of fun so you can build a full day.
Ride a chairlift or hike down to a limestone tunnel more than 850 feet long that is so big freight trains still run through it.
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