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 Instead of removing it from the road, the park administration decided to cut a tunnel in it.
Redwood Forest, California I've been there, me my mom and my dad entered a hollow tree and there was room inside of that tree for 10 more people. I measured how many steps it took to get around a tree an it took 32 steps. The place is just beautiful.
Giant Sequoias [wiki] (Sequoiadendron giganteum), which only grow in Sierra Nevada, California, are the world's biggest trees (in terms of volume). The biggest is General Sherman [wiki] in the Sequoia National Park - one behemoth of a tree at 275 feet m)