A complete hiker's guide to Sequoia National Park, home to many of California's most spectacular natural wonders. From the 300-foot Sequoia gigantea (one of the largest and oldest trees in the world) to the 14,494-foot Mt. Whitney (the highest peak in the lower 48), the park has long been extolled by presidents, residents, and foreign visitors. It is a prime hiking, backpacking, and camping destination, and draws millions of visitors every year.