Slim Princess, wide valley By Angela Cotey | February 28, 2024 | Last updated on August 8, 2025 Email Newsletter Get the newest photos, videos, stories, and more from Trains.com brands. Sign-up for email today! Get Updates Southern Pacific’s narrow-gauge line in the vast Owens Valley of California was known as the “Slim Princess.” Here a single freight car separates engine from caboose near Zurich (Big Pine) in July 1959. William H. Mills photo Share this article Print Facebook