This unusual tunnel can be seen in California's Sequoia National Park. The drive is cut through the tree trunk of a Sequoia which fell in 1937. Instead of removing it from the road, the park administration decided to cut a tunnel in it. It's 5.18 m. (17 ft.) wide and 2.44 m. (8 ft.) high.
drive-through redwood tree in the Mariposa Grove, Yosemite National Park, California. Ok, so this same picture hung in my grandparents lake house for about 20 years! I can never see this pic without feeling like an 8 year old. Warm memories!