The foothills of the Andes and the Sierras de Cordoba are vulnerable to hail. Sean McClory played the poet Joaquin Miller, author of "Songs of the Sierras". Camps spread out north and south of the American River and eastward into the Sierras. The name of the pepper is a reference to the mountains ("sierras") of these regions. In 1906 Evermann published "The Golden Trout of the Southern High Sierras". The American intervention had been limited to the western sierras of Chihuahua. In the following years, several other rugged routes over the Sierras were developed. Benicia became a way station on the way to the Sierras. Serrano means "mountaineers", or "those of the Sierras". During the Miocene, three periods of volcanism marked separate events in the Sierras. Her interest in wildlife was sparked by family vacations to the High Sierras. A total of 744 Sierras were delivered. The series focused on National Park Service Rangers stationed in the Sierras. Both Dr. Hayall and the University of the Sierras were fictitious. The temperature dropped below zero and the passes over the Sierras were closed.