Sequoia National Park's Tunnel Log Road

Travel Nature Adventure

Oct 5, 2026 · 6 min read

Sequoia National Park's Tunnel Log Road

Drivers in Sequoia National Park can cruise through a 50-foot-tall archway, a fallen giant sequoia tree, that has become a unique icon of the park.

Sequoia National Park is home to a unique natural wonder: the Tunnel Log, a giant sequoia tree entrance off one of the park’s roads. A fallen sequoia tree creates a stunning natural archway reaching over 50 feet above the ground and 30 feet wide, inviting drivers to pass through it. Unlike most fallen trees, this one was not moved. Instead, it was repurposed for maximum impact. Built in 1937, the tunnel through this rotting sequoia was crafted by Civilian Conservation Corps workers, in a decision that has transformed the tree into an icon of the park.

The Tunnel Log at Sequoia National Park — The Living Entrance

The Tunnel Log is a fallen giant sequoia tree that was felled by a storm in 1937. The tree lies across a road in California’s Sequoia National Park, forming a tunnel that drivers can pass through. The park’s Civilian Conservation Corps carved a tunnel through the trunk enabling cars to drive through it, adding a unique touch to an already beautiful forest. The Tunnel Log is one of the most popular photo stops and tourist attractions at Sequoia National Park. Today, the tree is slowly rotting and may be gone one day, but the CCC tunnel stands as a testament to human ingenuity and determination.

Navigating the iconography

Today, the Tunnel Log serves as both a symbol of human interaction with nature and a must-see destination for many visitors to the park. Although it has decayed over the decades, the tree remains an iconic example of preservation and ingenuity. The decaying tree is popular with many tourists. At the same time, it reflects the natural beauty of the surrounding area. People who visit the park flock to the Tunnel Log and drive through it. They understand that it is a unique opportunity to see such a landmark. The park’s popularity is partially due to videos and photos of visitors’ experiences. People love to share photos of their adventures at the Tunnel Log online. The photos they take help to increase the park’s popularity and encourage others to visit Sequoia National Park.

How this Tunnel Log gives us breath-taking views

The Tunnel Log encompasses a giant sequoia tree that once stood tall in the forest. A storm felled the sequoia tree, straddling the road and presenting an opportunity. Rather than remove it, the Civilian Conservation Corps workers tunneled through it and provided a unique and iconic "tree-you-can-drive-through". The Tunnel Log is one of the largest trees in the world. The exact origin of the Tree Tunnel is indeterminate. It stood for over 2,000 years. Due to a storm, it fell across the road. The workers who tunnel through it are known as the Civilian Conservation Corps (CCC). They were responsible for constructing the tunnel. Because the CCC was responsible for constructing the tunnel through the log, they were able to make a living while providing a fantastic experience for tourists. It remains a popular destination for visitors to appreciate the beauty of the park. Aging has made the trunk brittle. Visitors can no longer explore the inside of the tunnel. Yet the tree still stands as a significant landmark in the park, representing both its history and natural beauty. The tree spans approximately 80 feet and stands 35 feet above the ground. It is made up of a trunk and branches with bark. The trunk is the largest part of the tree, and the branches are smaller sections of the trunk. The tunnel through the Tree has a total length of 30 feet, and it has a diameter of 7.5 feet. Its height is 50 feet. The Tree Tunnel is accessible to visitors by car. The truck can fit through the trunk with approximately 1 1/2 inches of clearance. The tunnel through the trunk and branches is accessible by car.

The Tunneling of the fallen tree

Civilian Conservation Corps workers tunneled through the trunk in 1937. The efforts were part of a larger project to create scenic drives and viewpoints in national parks. The resulting tunnel structure is iconic. The workers used a combination of hand tools and motorized machinery to carve out the tunnel. The work required precision, especially at the height of 50 feet above the ground. The workers had to ensure the tunnel's measurements were exact to avoid compromising the stability of the trunk. The CCC used the tunnel as an opportunity to educate visitors about the natural history of the park. They also shared stories about the iconic Tunnel Log and its significance to the park's history.

The Experience at the Tunnel Log

The Tunnel Log provides a memorable experience, often enhanced with audio and visual elements. Visitors enjoy the electronically amplified sound of wind blowing through the tree's leaves. It allows them to enjoy the sound from any location. The fact the sound of wind is audible to the visitors is a testament to the tree's durability and the CCC's work. The experience of driving through the tree is unique to Sequoia National Park. In fact, the Tunnel Log is famous for being one of the only trees in America that you can drive through. Consequently, many people come to see this iconic landmark, and the park is attracting many tourists every year.

For Travelers Seeking the Tunnel Log

Anyone who wants to visit the Tunnel Log should consider the following advisories:

  • Seasonal access: This location is accessible year round. However, the park may close due to weather conditions. The visitors have to be aware of the weather forecast before going to the park.
  • Park hours: Sequoia National Park is open 24 hours a day, 7 days a week. It might be best to avoid the hours of rush traffic. Visitors have to plan their time accordingly. The road is not always a busy road, but it is during peak times.
  • Entry fees: The park is free to enter. There are no time limitations to visitors' stays. Visitors can explore the park as long as they like, but entry is only accessible to visitors via car.
  • No special gear is required: Visitors do not need any special gear to explore the park. However, it may require a car or bicycle. If they plan to stay overnight, visitors might also need camping equipment. Visitors must also remember to bring enough snacks and water for their visit.

The Tunnel Log[.]

This attraction is one of the most popular destinations in the national parks of California. It is a testament to human ingenuity, the beauty of nature, and the resilience of natural landmarks. It has remained a popular destination for almost 90 years. The Tunnel Log stands as a tribute to history and human innovation. It is a powerful symbol of the park's enduring beauty and resilience. A loss of the tunnel would be a devastating blow to the park and its visitors.

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Questions readers ask

How did the Tunnel Log form, and why was it left in place?

A storm in 1937 brought down the giant sequoia tree across the road. Rather than remove it, the Civilian Conservation Corps (CCC) carved a tunnel through the trunk, creating a unique and iconic landmark that has since become a major attraction in Sequoia National Park. The tree was left in place to maximize its impact as a tourist attraction.

Can you still drive through the Tunnel Log today?

Yes, visitors can still drive through the Tunnel Log. However, the tree has decayed over the years, which has made the trunk brittle. It is no longer safe for people to explore the inside of the tunnel, but driving through it remains a popular and unique experience.

What is the significance of the Tunnel Log besides being a tourist attraction?

The Tunnel Log is significant for several reasons. It serves as a symbol of human interaction with nature, showcasing how people can repurpose natural elements to create something iconic. The tree is a testament to human ingenuity and also reflects the natural beauty of Sequoia National Park.

What was the role of the Civilian Conservation Corps in creating the Tunnel Log?

The Civilian Conservation Corps (CCC) played a crucial role in creating the Tunnel Log. In 1937, these workers carved a tunnel through the fallen sequoia tree, transforming it into a unique and iconic landmark. Their efforts not only provided a fantastic experience for tourists but also gave them employment during the Great Depression.

How has the Tunnel Log impacted the popularity of Sequoia National Park?

The Tunnel Log has significantly boosted the popularity of Sequoia National Park. Visitors flock to drive through the tunnel and take photos, which they often share online. These shared experiences have helped to increase the park's visibility and attract more tourists to the area.

What is the future of the Tunnel Log given its decaying state?

The Tunnel Log is slowly rotting, and its future is uncertain. While the tree may eventually disappear, the tunnel itself stands as a testament to human ingenuity and determination. For now, it remains a significant landmark and a must-see destination for many visitors to the park.

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