Historical Towns (6) Pandora, Colorado History Click on an image to get more details or a direct link. Smuggler-Union Mill at Pandora, Colorado Pandora Mill and Sheridan Incline - Pandora, CO Pandora, Colorado Pandora town and mills with Telluride in the distance Smuggler Union mills at Pandora ca. 1910-1920 Pack train at Sheridan Incline near Pandora, Colorado