From a National Geographic online release:
Travelers are dreamers who act on their inspirations. The new National Geographic book Epic Journeys: 245 Life-Changing Adventures is for the people who go beyond their comfort zones to experience the wild beauty of the natural world. The book features adrenaline-fueled forays to all seven continents. (See the most breathtaking national parks around the world.)
While the spirit of exploration spans the globe, being an intrepid traveler doesn’t have to mean summiting Mount Everest or surveying icebergs in Antarctica. Some of the planet’s wildest places—launchpads for all sorts of discoveries about the world and yourself—are in North America’s national parks. We’ve selected 15 mind-blowing adventures to inspire your inner explorer.