Comprised of rugged hills and scenic valleys, this unit contains Guardian Peak, one of the highest peaks within the area. The northern side of Boulder Canyon is formed by steep cliffs and barren rock which drop to the waters of Lake Mead in a dramatic fashion. Watch for the red sandstone outcroppings which merge with the green desert vegetation and the grays, browns, and yellows of the desert floor. This unique place is habitat for the rare Las Vegas bear poppy plant.