A little further inland you'll find trees that are hundreds of years old, towering above the forest floor; and ancient mountain ranges with breathtaking views worth the challenging hike and climb. (australiassouthwest.com)
Running parallel to the east coast of North America are the Appalachians, a chain of ancient mountains once the size of the Rockies. (mexicotonewyork.com)
Climb to the rim of active volcanoes, ride horseback down ancient mountain trails, snorkel and dive some of the world's best dive sites, zip - line through the canopies of lush jungles, and dance the night away in the best salsa clubs. (gapyear.com)