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Devils Postpile National Monument Middle Fork of the San Joaquin River flooding Soda Springs Meadow in June 2006
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Devils Postpile National Monument
Driving and Road Safety

Extreme elevation changes over short distances mean valley roads are steep, narrow, and winding but filled with breathtaking vistas. So take your time! A few rules of the road greatly increase your chances of a safe and enjoyable drive.

Downshift

When going downhill, put the gearshift in 1, 2, or L. The engine gets louder as it slows you down, but it will save your brakes from burning out.

Let others Pass

Slower vehicles should use paved turnouts to let traffic pass.

Motorcycles

Avoid the oil buildup in the middle of uphill lanes and be aware that traffic may not be looking for motorcyclists.

Stay on Established Roads and Pull-outs

Park and travel on pavement or gravel roads only.

Gasoline 

Gasoline is not sold within park and valley boundaries. Be sure to fill up in town before beginning your trip on Rt.203

Bicycles

Ride only on roads (not trails), single file with traffic, and wear light colors after dark.  Speeds must not exceed those posted on the roads.  People under 18 must wear a helmet and helments are strongly suggested for all.

Cell Phones 

Service is spotty because of the great distance to cell towers and the rugged terrain. There are pays phone is available in the valley or ask a ranger.

More Information

Roads may close at any time due to snow and ice. If inclement weather is expected or during the spring and fall, call 760-934-2289 to check to see if the road is open.

 

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Did You Know?
The Devils Postpile that you see today is only a fraction of the size the original lava flow formation that filled this valley. Natural processes, especially glaciers, have eroded the rest.

Last Updated: September 27, 2009 at 19:58 MST