If you go online and look for historical photos of redwoods, you’ll find lots of photos of people driving their cars through tunnels that have been cut into the trees. And you might ask yourself, how did this become a thing? Who wants to drive their car through a tree? Maybe you’ve driven a car through a redwood. In this first episode of This Is Big, we take a deep dive into this strange phenomenon and learn how it’s connected to the entire culture we’ve built around these magnificent forests.