This is the story of the desert, a giant cactus, and the many animals that live within it. The saguaro cactus, found in the deserts of the southern United States and northern Mexico, can grow nearly 20 meters tall, weigh as much as 8,000 kilograms, and live for up to 200 years. Through the life story of this remarkable cactus, the book vividly and excitingly portrays the wonders of nature's ecosystem.