With more than 4 million people, the Phoenix metropolitan area is one of the country's largest. Surprisingly, it's also one of the most diverse and dramatic for hikers, with scenic destinations ranging from area parks, greenbelts, and preserves to high and low deserts and breathtaking mountains. This easy-to-use guide features the best scenic day hikes, determined by author Charles Liu using state-of-the-art GPS technology. These hikes are geared...