History: Wagons preparing to go through an ice tunnel on the Million Dollar Highway near Ironton, Colorado, late spring of 1888. [1889x837]

http://www.westernmininghistory.com/images/town_gallery/Ironton_CO_1888_00990044.jpeg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/5ylb2j/wagons_preparing_to_go_through_an_ice_tunnel_on/?utm_source=ifttt