The top national parks, monuments, preserves and historic sites within the four major North American deserts are showcased. Stunning high-definition footage brings to life the majestic landscapes of The Great Basin Desert of Nevada and Utah; the Mojave Desert of California; the Sonoran Desert of Arizona; and the Chihuahuan Desert of New Mexico and Texas. Experts, researchers and rangers from national parks discuss the biology, geology and research that inspired the protection and preservation of these natural treasures.