Tunnel Log

The Tunnel Log is a giant sequoia that fell across Crescent Meadow Road in 1937, and instead of removing the huge trunk, park crews cut a tunnel through it so that traffic could continue. The result is one of the most photographed stops in Sequoia National Park: a passage roughly eight feet high and seventeen feet wide, carved through a trunk more than twenty feet across, with the bark and growth rings visible on either side. Drivers can pass through in smaller vehicles, and the tunnel has a clearance limit that rules out taller trucks, vans and RVs. Beside the tunnel there is a bypass and pullout, and a walking path around the log so you can look at the cross-section and imagine the tree standing upright in the forest. A trunk this wide gives a real feel for the scale of the trees. It sits along Crescent Meadow Road about two miles from the Giant Forest Museum, between the museum and the road's end at Crescent Meadow. The area around it has shaded forest, easy walks and good picnic spots. Because the road has a 22-foot vehicle length limit and may be closed to private vehicles in busy seasons, check conditions at the museum before you set out. The stop takes only twenty minutes, but it is an irresistible photo opportunity and a good conversation starter for children.

Why it is here. Sequoias do not usually fall because of rot in the way other trees do; their wood is rich in tannins that resist decay, so fallen trunks can lie on the forest floor for centuries. This tree came down in a storm and blocked the road, and the park chose to cut through instead of moving it.

In an era when national parks celebrated novelty roadside features, the decision made sense, and the tunnel has become a landmark in its own right. Today the park focuses on protecting living trees and has removed most such features, so the Tunnel Log stands as a reminder of a different era of park management.

How to enjoy it. Walk the short path on the side of the log first, to see the rings and the scale. If you are driving a car, line up carefully and go slowly, with a friend outside taking photos. If your vehicle is tall or wide, use the bypass road and walk through instead. Early morning light is best and the stop is often quieter before ten o'clock. Do not climb on the log or carve into it, as the park asks visitors to preserve it.

Planning. The Tunnel Log makes a convenient link between Moro Rock and Crescent Meadow, which are the other two stops on the road. A full loop of the three, plus the Giant Forest Museum, fits comfortably in a half day and is a good plan for families who want short stops with a payoff at each. There are restrooms near the museum and Crescent Meadow, but not at the log itself.

A note on scale. The cross-section of the log shows more than just rings: it shows how much of a sequoia is bark, how thick the trunk is and how the heartwood is reddish and dense. Children enjoy standing beside the trunk for photographs, and the contrast between the people and the log makes the scale obvious.

If the area is busy, wait a few minutes for a gap, or visit at the end of the day when tour traffic has thinned. Remember that the log is a protected feature, so please do not carve names or collect bark.