Cumbres & Toltec Scenic Railroad /Friends of the C&TS/TABB Narration along the Cumbres & Toltec Scenic Railroad and TABB. This native app will enhance the guest experience will riding the Cumbres & Toltec Scenic Railroad or navigating the Tracks Across Boarders Byway using GeoAlerts. The alerts will inform guests when they are near a point of interest and will give more detailed information about the site including, history, descriptions and photos.