Located in the far-flung tropical Pacific Ocean, the Galapagos Islands aren't really close (by more than 600 miles) to anywhere of note, but once there, early pioneers discovered a breathtakingly pristine land of limitless possibilities. The new episode "Galapagos: Enchanted Isles" tales viewers on a journey from the lava ramparts of this coastline to its fiery heart to explore what makes this remote location one of the world's most important areas of biodiversity. Helena Bonham Carter narrates.