Bluff Mountain Tunnel
Virginia
The Parkway's engineers refused to blast through mountains except when there was no other way -- this 630-foot bore is the *only* tunnel on the entire 217.5-mile Virginia section, making it a genuine oddity on a road famous for going around things, not through them.
Why Roamward picked it
MP 53.1 (VA); free (drive-through); VERIFIED -- NPS official tunnel-heights page confirms Bluff Mountain as the sole VA tunnel, 630 ft, still in active use.
Hours, admission, and access change — confirm with the official source before you plan the detour.
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