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Reds Meadow Resort
A mandatory shuttle service runs from Mammoth to the Devils Postpile/Reds Meadow area. The shuttle bus will run from late June through Labor Day weekend. During this time, all visitors (except those camping or those with disabilities) are required to ride the shuttle bus.
All visitors, regardless if they use the mandatory shuttle system, are camping, or drive their own vehicle, must pay a transportation fee in order to enter Reds Meadow Valley.
Day Pass: Adults $7, Children 3-15 $4, Children under 3 free
3-Day Pass: Adults $14, Children 3-15 $8, Children under 3 free
Season Pass: Adults $35, Children 3-15 $20, Children under 3 free
It is best to check the National Park Service's website for up to date information: National Park Service - Devils Postpile.