Tunnel Rock

Sequoia National Park

In the 1930s, no one anticipated the development of monster SUVs. About 1.5 miles north of the Foothills Visitor Center, a flat granite boulder on the western side of the Generals Hwy caps a tunnel dug by the Civilian Conservation Corps (CCC). Until the highway was widened in 1997, this narrow passageway was the only route through. It’s closed to modern-day vehicles, which would have a tough time squeezing through side by side, but pedestrians can still stroll underneath it.

Lonely Planet's must-see attractions

Nearby Sequoia National Park attractions

1. Hospital Rock

2.63 MILES

The Potwisha people, a band of Monache (also known as Western Mono), originally lived at this site. When the first white settler, Hale Tharp, arrived in…

2. Moro Rock

4.04 MILES

A quarter-mile staircase climbs 350 steps (over 300ft) to the top of Sequoia’s iconic granite dome at an elevation of 6725ft, offering mind-boggling views…

3. Tunnel Log

4.49 MILES

Visitors can drive through a 2000-year-old tree, which fell naturally in 1937. It once stood 275ft high with a base measuring 21ft in diameter. Regular…

4. Mineral King


A scenic subalpine valley at 7500ft, Mineral King is Sequoia’s backpacking mecca and a good place to find solitude. Gorgeous and gigantic, its glacially…

5. Giant Forest Museum

4.85 MILES

For a primer on the intriguing ecology and history of giant sequoias, this pint-sized modern museum will entertain both kids and adults. Hands-on exhibits…

6. Crescent Meadow

5.02 MILES

Said to have been described by John Muir as the ‘gem of the Sierra,’ this lush meadow is buffered by a forest of firs and giant sequoias. High grass and…

7. Eagle View

5.38 MILES

Jaw-dropping spectacular view of the Sierra Mountains. It's reasonably easily accessible via a 1-mile walk along the High Sierra Trail from Crescent…

8. Crystal Cave

5.85 MILES

Discovered in 1918 by two parks' employees who were going fishing, this unique cave was carved by an underground river and has marble formations estimated…