Devils Postpile

The Devils Postpile is one of the world's finest examples of columnar basalt. These striking columns, formed from a slow-cooling lava flow approximately 82,000 to 100,000 years ago, tower up to 60 feet (18 meters) high. While many are hexagonal, some columns have five, four, three, or seven sides due to variations in cooling. A glacier later carved away one side and polished its top, leaving visible glacial striations and a unique 'tiled' appearance.

During the peak season (typically mid-June to early September), private vehicles are generally not allowed past the Minaret Summit entrance station between 7:00 AM and 7:00 PM. Visitors must park at Mammoth Mountain Ski Area and take the mandatory Reds Meadow Shuttle Bus into the monument. Parking fills up fast, especially in summer, so arriving before mid-morning is strongly recommended. There is a fee for the shuttle.

There is an entrance fee to the Reds Meadow Valley, which includes Devils Postpile National Monument. This fee is typically collected at the Minaret Summit entrance station. If you arrive via the Reds Meadow Shuttle, the shuttle ticket usually covers this fee. Specific permits are generally not required for day hiking within the monument itself, but backcountry permits are needed for overnight stays in the adjacent Ansel Adams Wilderness.

The two primary trails lead to the Devils Postpile formation and Rainbow Falls. The trail to the Postpile is a relatively easy, mostly flat walk of about 0.4 miles (0.6 km) from the shuttle stop. The trail to Rainbow Falls is a longer, moderate hike of about 2.5 miles (4 km) one-way from the Postpile, with some elevation changes. Both trails are well-maintained and suitable for most hikers.

Yes, it's a popular option to combine both landmarks into a single hike. Many visitors walk from the Devils Postpile shuttle stop to the Postpile, then continue along the trail to Rainbow Falls. This combined route is approximately 5 miles (8 km) round trip from the Postpile shuttle stop, offering a rewarding experience of both natural wonders.

Yes, leashed dogs are generally permitted on trails within Devils Postpile National Monument, including the paths to the Postpile and Rainbow Falls. However, dogs are typically not allowed on the Reds Meadow Shuttle Bus, except for service animals. If you plan to bring your dog, you may need to drive in during hours when the shuttle is not mandatory (before 7 AM or after 7 PM during peak season) or make alternative arrangements.

The trail to the base of the Devils Postpile formation is generally considered accessible, being relatively flat and well-maintained. However, the trail to the top of the Postpile and the longer trail to Rainbow Falls involve some elevation changes and uneven terrain, which may be challenging for some visitors. It's best to check the official NPS website for the most current accessibility information.

The monument and surrounding Inyo National Forest are home to diverse wildlife. Visitors might spot mule deer, various bird species, and smaller mammals like pine martens and coyotes. Black bears are also present in the area, so it's crucial to practice bear-safe food storage and hiking habits. Always observe wildlife from a respectful distance.

Devils Postpile National Monument is typically closed to vehicle traffic from mid-October to mid-June due to heavy snow. However, it is accessible during winter for cross-country skiing and snowshoeing. This requires a much longer journey, often from Mammoth Lakes, and visitors should be prepared for challenging winter conditions and self-sufficiency.

Even for shorter hikes, it's wise to pack essentials. Bring plenty of water, snacks, sun protection (hat, sunscreen, sunglasses), and layers of clothing as mountain weather can change quickly. Comfortable hiking shoes are a must. A camera is highly recommended for capturing the unique geology and scenic beauty. Bear spray is not typically necessary, but knowing bear safety protocols is always good.

Yes, several campgrounds are located within the Reds Meadow Valley, close to Devils Postpile. These include Reds Meadow Campground, Agnew Meadows Campground, and Pumice Flat Campground, among others. These campgrounds are popular and often fill up quickly, especially during peak season, so reservations are highly recommended if available, or plan to arrive early for first-come, first-served sites.

There are no restaurants or food services directly within Devils Postpile National Monument. However, there is a general store and a small cafe at Reds Meadow Resort, which is located within the Reds Meadow Valley, a short distance from the monument. For more extensive dining options, the town of Mammoth Lakes offers a wide variety of restaurants and cafes.