Linville Caverns – North Carolina’s only show caverns. Open daily March thru November, weekends only December through February. Courteous, experienced guides, outstanding gift shop. Located on US 221 between Linville and Marion, just 4 miles south of the Parkway Milepost 317.4. Turn left on US 221 toward Linville Falls and Marion. www.linvillecaverns.com Email: email@example.com (800) 419-0540.