The Black Hills (including Custer State Park) have a collection of very unusual of twisty mountain roads known as The Needles Highway and the Iron Mountain Road. Twisty mountain roads are, alone, not "unusual". What makes these roads different are the series of narrow tunnels carved through the mountains just high and wide enough to permit passage - - in one direction at a time - - of smaller vehicles. If you're driving a larger (than Class B) RV, check your dimensions (and those of the tunnels) carefully unless you want to leave your air-conditioner and mirrors behind! But what really makes these tunnels of interest is their alignment - - most of them are aligned with Mount Rushmore so that the National Monument is 'framed' by the tunnels as you drive through and, as you emerge, the famed framed faces will be . . . well . . . in your face.

Then there are the "pigtails". These are wooden trestles/bridges in the form of a helix (or pig's tail) that loop back upon themselves in order to gain (and lose) altitude - - reminiscent, if you visited it, of the Tehachapi railroad Loop in south-central California.

Take this 8 minute ride with use through the 3 tunnels and 3 pigtails of the Iron Mountain Road (we have previously posted a video of The Needles)

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