>> john leads me past a giant statue of paul bunyan and into a stunning rainforest, which looks like something out of a tall tale. it's filled with sky-high coast redwoods, spruces and firs some 20 feet wide and 300 feet tall. >> nearly as tall as the statue of liberty. >> like a skyscraper. redwoods like these are among the oldest living things on earth. >> as much as 3,000 years old. >> it takes my breath away. but take a closer look. there's something bizarre about these ancient giants. on the base of this one is a mangled mess the size of a bus. what's going on here? >> the spruce trees are growing over a log that fell 1,000 years >> s ago.us in the tangled tree. whatever it is, it's weird. >> and if we stand here too long, they will grow on us, too, so we need to keep moving. >> [ laughs ] further down is another contorted oddity -- the elephant tree, and then the upside-down