From singing sand dunes to a dozen mountain ranges to the world's largest Joshua Tree forest, the best trails in an undiscovered national parkland. *Climb a cinder cone, squeeze through a lava tube, and hide out in Hole-in-the-Wall and Banshee Canyon. *Explore Zzyzx and Soda Springs, walk-about historic Kelso Depot, wander the vast and "musical" Kelso Dunes. *Plus hikes just outside the park in Afton Canyon, Mitchell Caverns and Amboy Crater off old Route 66. Complete with The Trailmaster's colorful stories, proven trail accounts and easy-to-follow maps.